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Finding the Fourth Proportional to 71,522.80, 107,354.82 and 53,691.46

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Solution

The fourth proportional to 71,522.80, 107,354.82 and 53,691.46 is: 80,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,522.80 : 107,354.82 = 53,691.46 : x
  2. Step 2: Convert to fraction form
    71,522.80/107,354.82 = 53,691.46/x
  3. Step 3: Cross multiply
    71,522.80x = 107,354.82 × 53,691.46
  4. Step 4: Simplify right side
    71,522.80x = 5,764,037,023.84
  5. Step 5: Solve for x
    x = 5,764,037,023.84/71,522.80
  6. Step 6: Final answer
    x = 80,590.20

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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.