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Finding the Fourth Proportional to 71,331.60, 106,882.20 and 44,989.20

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Solution

The fourth proportional to 71,331.60, 106,882.20 and 44,989.20 is: 67,411.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,331.60 : 106,882.20 = 44,989.20 : x
  2. Step 2: Convert to fraction form
    71,331.60/106,882.20 = 44,989.20/x
  3. Step 3: Cross multiply
    71,331.60x = 106,882.20 × 44,989.20
  4. Step 4: Simplify right side
    71,331.60x = 4,808,544,672.24
  5. Step 5: Solve for x
    x = 4,808,544,672.24/71,331.60
  6. Step 6: Final answer
    x = 67,411.14

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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.