The preferred solution I think that would help this problem of miseducation and unwanted pregnancies is bringing professionals to educate and help shape new and forward thoughts into otherwise ingrained cultural thinking. People of this caliber that would have authority and ethos over common citizens of any country would be human rights workers, sexual awareness activists/workers, social workers, and doctors/other professionals who wish to do service in countries that they are needed in. The cost of these projects is not extremely high since many of the professionals willing to travel and work in these developing countries do not require a much higher pay other than the salaries from their usual professions. In regards to the cost of production for equipment/utilities, it is not pricy since heavy equipment and supplies are not needed. Contraceptives and birth control are cheap when bought in bulk… and education is free! Also, for these type of projects, donations tend to pour in. A startup idea that I think would be the best bet is to get donations in order to put together a program with volunteers and professionals that would be willing to go on a mission trip to help. From there, a business can form to help shape the lives of future generations of women and families in these countries. 

http://pharma.bayer.com/en/commitment-responsibility/family-planning/family-planning-for-sustainable-development/