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Finding the Fourth Proportional to 661,502.10, 992,253.15 and 437,553.30

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Solution

The fourth proportional to 661,502.10, 992,253.15 and 437,553.30 is: 656,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,502.10 : 992,253.15 = 437,553.30 : x
  2. Step 2: Convert to fraction form
    661,502.10/992,253.15 = 437,553.30/x
  3. Step 3: Cross multiply
    661,502.10x = 992,253.15 × 437,553.30
  4. Step 4: Simplify right side
    661,502.10x = 434,163,640,217.90
  5. Step 5: Solve for x
    x = 434,163,640,217.90/661,502.10
  6. Step 6: Final answer
    x = 656,329.95

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Double scale
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Similar ratio
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1.5x scale

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.