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Finding the Fourth Proportional to 431,773.60, 647,660.40 and 132,251.80

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Solution

The fourth proportional to 431,773.60, 647,660.40 and 132,251.80 is: 198,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,773.60 : 647,660.40 = 132,251.80 : x
  2. Step 2: Convert to fraction form
    431,773.60/647,660.40 = 132,251.80/x
  3. Step 3: Cross multiply
    431,773.60x = 647,660.40 × 132,251.80
  4. Step 4: Simplify right side
    431,773.60x = 85,654,253,688.72
  5. Step 5: Solve for x
    x = 85,654,253,688.72/431,773.60
  6. Step 6: Final answer
    x = 198,377.70

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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.