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Finding the Fourth Proportional to 89,687.80, 134,531.70 and 27,350.20

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Solution

The fourth proportional to 89,687.80, 134,531.70 and 27,350.20 is: 41,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,687.80 : 134,531.70 = 27,350.20 : x
  2. Step 2: Convert to fraction form
    89,687.80/134,531.70 = 27,350.20/x
  3. Step 3: Cross multiply
    89,687.80x = 134,531.70 × 27,350.20
  4. Step 4: Simplify right side
    89,687.80x = 3,679,468,901.34
  5. Step 5: Solve for x
    x = 3,679,468,901.34/89,687.80
  6. Step 6: Final answer
    x = 41,025.30

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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.