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Finding the Fourth Proportional to 63,391.28, 87,471.24 and 36,531.68

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Solution

The fourth proportional to 63,391.28, 87,471.24 and 36,531.68 is: 50,408.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,391.28 : 87,471.24 = 36,531.68 : x
  2. Step 2: Convert to fraction form
    63,391.28/87,471.24 = 36,531.68/x
  3. Step 3: Cross multiply
    63,391.28x = 87,471.24 × 36,531.68
  4. Step 4: Simplify right side
    63,391.28x = 3,195,471,348.88
  5. Step 5: Solve for x
    x = 3,195,471,348.88/63,391.28
  6. Step 6: Final answer
    x = 50,408.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.