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Finding the Fourth Proportional to 661,566,591.20, 992,349,886.80 and 661,566,591.20

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Solution

The fourth proportional to 661,566,591.20, 992,349,886.80 and 661,566,591.20 is: 992,349,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,566,591.20 : 992,349,886.80 = 661,566,591.20 : x
  2. Step 2: Convert to fraction form
    661,566,591.20/992,349,886.80 = 661,566,591.20/x
  3. Step 3: Cross multiply
    661,566,591.20x = 992,349,886.80 × 661,566,591.20
  4. Step 4: Simplify right side
    661,566,591.20x = 656,505,531,887,981,952
  5. Step 5: Solve for x
    x = 656,505,531,887,981,952/661,566,591.20
  6. Step 6: Final answer
    x = 992,349,886.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.