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Finding the Fourth Proportional to 63,722.68, 87,961.68 and 42,494.20

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Solution

The fourth proportional to 63,722.68, 87,961.68 and 42,494.20 is: 58,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,722.68 : 87,961.68 = 42,494.20 : x
  2. Step 2: Convert to fraction form
    63,722.68/87,961.68 = 42,494.20/x
  3. Step 3: Cross multiply
    63,722.68x = 87,961.68 × 42,494.20
  4. Step 4: Simplify right side
    63,722.68x = 3,737,861,222.26
  5. Step 5: Solve for x
    x = 3,737,861,222.26/63,722.68
  6. Step 6: Final answer
    x = 58,658.26

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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.