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Finding the Fourth Proportional to 83,793.90, 125,731.80 and 39,425.04

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Solution

The fourth proportional to 83,793.90, 125,731.80 and 39,425.04 is: 59,156.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,793.90 : 125,731.80 = 39,425.04 : x
  2. Step 2: Convert to fraction form
    83,793.90/125,731.80 = 39,425.04/x
  3. Step 3: Cross multiply
    83,793.90x = 125,731.80 × 39,425.04
  4. Step 4: Simplify right side
    83,793.90x = 4,956,981,244.27
  5. Step 5: Solve for x
    x = 4,956,981,244.27/83,793.90
  6. Step 6: Final answer
    x = 59,156.83

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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.