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Finding the Fourth Proportional to 83,691.90, 125,440.65 and 33,747.30

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Solution

The fourth proportional to 83,691.90, 125,440.65 and 33,747.30 is: 50,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,691.90 : 125,440.65 = 33,747.30 : x
  2. Step 2: Convert to fraction form
    83,691.90/125,440.65 = 33,747.30/x
  3. Step 3: Cross multiply
    83,691.90x = 125,440.65 × 33,747.30
  4. Step 4: Simplify right side
    83,691.90x = 4,233,283,247.75
  5. Step 5: Solve for x
    x = 4,233,283,247.75/83,691.90
  6. Step 6: Final answer
    x = 50,581.76

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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.