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Finding the Fourth Proportional to 661,796.62, 992,673.85 and 393,761.14

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Solution

The fourth proportional to 661,796.62, 992,673.85 and 393,761.14 is: 590,629.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,796.62 : 992,673.85 = 393,761.14 : x
  2. Step 2: Convert to fraction form
    661,796.62/992,673.85 = 393,761.14/x
  3. Step 3: Cross multiply
    661,796.62x = 992,673.85 × 393,761.14
  4. Step 4: Simplify right side
    661,796.62x = 390,876,386,824.19
  5. Step 5: Solve for x
    x = 390,876,386,824.19/661,796.62
  6. Step 6: Final answer
    x = 590,629.17

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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.