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Finding the Fourth Proportional to 108,079.20, 162,191.70 and 63,658.80

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Solution

The fourth proportional to 108,079.20, 162,191.70 and 63,658.80 is: 95,531.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,079.20 : 162,191.70 = 63,658.80 : x
  2. Step 2: Convert to fraction form
    108,079.20/162,191.70 = 63,658.80/x
  3. Step 3: Cross multiply
    108,079.20x = 162,191.70 × 63,658.80
  4. Step 4: Simplify right side
    108,079.20x = 10,324,928,991.96
  5. Step 5: Solve for x
    x = 10,324,928,991.96/108,079.20
  6. Step 6: Final answer
    x = 95,531.14

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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.