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Finding the Fourth Proportional to 113,787.40, 156,989.14 and 73,524.88

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Solution

The fourth proportional to 113,787.40, 156,989.14 and 73,524.88 is: 101,440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,787.40 : 156,989.14 = 73,524.88 : x
  2. Step 2: Convert to fraction form
    113,787.40/156,989.14 = 73,524.88/x
  3. Step 3: Cross multiply
    113,787.40x = 156,989.14 × 73,524.88
  4. Step 4: Simplify right side
    113,787.40x = 11,542,607,679.80
  5. Step 5: Solve for x
    x = 11,542,607,679.80/113,787.40
  6. Step 6: Final answer
    x = 101,440.12

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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.