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Finding the Fourth Proportional to 13,451.52, 20,177.22 and 3,591.78

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Solution

The fourth proportional to 13,451.52, 20,177.22 and 3,591.78 is: 5,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.52 : 20,177.22 = 3,591.78 : x
  2. Step 2: Convert to fraction form
    13,451.52/20,177.22 = 3,591.78/x
  3. Step 3: Cross multiply
    13,451.52x = 20,177.22 × 3,591.78
  4. Step 4: Simplify right side
    13,451.52x = 72,472,135.25
  5. Step 5: Solve for x
    x = 72,472,135.25/13,451.52
  6. Step 6: Final answer
    x = 5,387.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.