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Finding the Fourth Proportional to 108,474.60, 162,711.90 and 38,344.80

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Solution

The fourth proportional to 108,474.60, 162,711.90 and 38,344.80 is: 57,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,474.60 : 162,711.90 = 38,344.80 : x
  2. Step 2: Convert to fraction form
    108,474.60/162,711.90 = 38,344.80/x
  3. Step 3: Cross multiply
    108,474.60x = 162,711.90 × 38,344.80
  4. Step 4: Simplify right side
    108,474.60x = 6,239,155,263.12
  5. Step 5: Solve for x
    x = 6,239,155,263.12/108,474.60
  6. Step 6: Final answer
    x = 57,517.20

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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.