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Finding the Fourth Proportional to 67,158.48, 100,737.72 and 27,672.21

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Solution

The fourth proportional to 67,158.48, 100,737.72 and 27,672.21 is: 41,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,158.48 : 100,737.72 = 27,672.21 : x
  2. Step 2: Convert to fraction form
    67,158.48/100,737.72 = 27,672.21/x
  3. Step 3: Cross multiply
    67,158.48x = 100,737.72 × 27,672.21
  4. Step 4: Simplify right side
    67,158.48x = 2,787,635,342.76
  5. Step 5: Solve for x
    x = 2,787,635,342.76/67,158.48
  6. Step 6: Final answer
    x = 41,508.32

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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.