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Finding the Fourth Proportional to 67,229.80, 100,844.70 and 56,732.20

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Solution

The fourth proportional to 67,229.80, 100,844.70 and 56,732.20 is: 85,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,229.80 : 100,844.70 = 56,732.20 : x
  2. Step 2: Convert to fraction form
    67,229.80/100,844.70 = 56,732.20/x
  3. Step 3: Cross multiply
    67,229.80x = 100,844.70 × 56,732.20
  4. Step 4: Simplify right side
    67,229.80x = 5,721,141,689.34
  5. Step 5: Solve for x
    x = 5,721,141,689.34/67,229.80
  6. Step 6: Final answer
    x = 85,098.30

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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.