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Finding the Fourth Proportional to 91,635.93, 137,487.92 and 29,311.29

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Solution

The fourth proportional to 91,635.93, 137,487.92 and 29,311.29 is: 43,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,635.93 : 137,487.92 = 29,311.29 : x
  2. Step 2: Convert to fraction form
    91,635.93/137,487.92 = 29,311.29/x
  3. Step 3: Cross multiply
    91,635.93x = 137,487.92 × 29,311.29
  4. Step 4: Simplify right side
    91,635.93x = 4,029,948,148.06
  5. Step 5: Solve for x
    x = 4,029,948,148.06/91,635.93
  6. Step 6: Final answer
    x = 43,977.82

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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.