Principles of Preserving Wealth The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 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. The Power of Compound Interest Learn how to harness the power of compound interest for your investments. Lots of Variables with Fixed-Rate Mortgages When selecting a fixed-rate mortgage, a borrower has to determine how many years to finance the loan.