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Finding the Fourth Proportional to 108,523.52, 162,787.44 and 71,320.76

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Solution

The fourth proportional to 108,523.52, 162,787.44 and 71,320.76 is: 106,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,523.52 : 162,787.44 = 71,320.76 : x
  2. Step 2: Convert to fraction form
    108,523.52/162,787.44 = 71,320.76/x
  3. Step 3: Cross multiply
    108,523.52x = 162,787.44 × 71,320.76
  4. Step 4: Simplify right side
    108,523.52x = 11,610,123,939.25
  5. Step 5: Solve for x
    x = 11,610,123,939.25/108,523.52
  6. Step 6: Final answer
    x = 106,982.56

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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.