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Finding the Fourth Proportional to 71,191.98, 106,787.97 and 18,601.52

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Solution

The fourth proportional to 71,191.98, 106,787.97 and 18,601.52 is: 27,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191.98 : 106,787.97 = 18,601.52 : x
  2. Step 2: Convert to fraction form
    71,191.98/106,787.97 = 18,601.52/x
  3. Step 3: Cross multiply
    71,191.98x = 106,787.97 × 18,601.52
  4. Step 4: Simplify right side
    71,191.98x = 1,986,418,025.77
  5. Step 5: Solve for x
    x = 1,986,418,025.77/71,191.98
  6. Step 6: Final answer
    x = 27,902.27

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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.