The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Share | Related Content The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does. How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.