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Finding the Fourth Proportional to 113,471.62, 156,587.79 and 63,170.62

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Solution

The fourth proportional to 113,471.62, 156,587.79 and 63,170.62 is: 87,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,471.62 : 156,587.79 = 63,170.62 : x
  2. Step 2: Convert to fraction form
    113,471.62/156,587.79 = 63,170.62/x
  3. Step 3: Cross multiply
    113,471.62x = 156,587.79 × 63,170.62
  4. Step 4: Simplify right side
    113,471.62x = 9,891,747,778.73
  5. Step 5: Solve for x
    x = 9,891,747,778.73/113,471.62
  6. Step 6: Final answer
    x = 87,173.76

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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.