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Finding the Fourth Proportional to 61,129.89, 91,694.97 and 16,757.28

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Solution

The fourth proportional to 61,129.89, 91,694.97 and 16,757.28 is: 25,135.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.89 : 91,694.97 = 16,757.28 : x
  2. Step 2: Convert to fraction form
    61,129.89/91,694.97 = 16,757.28/x
  3. Step 3: Cross multiply
    61,129.89x = 91,694.97 × 16,757.28
  4. Step 4: Simplify right side
    61,129.89x = 1,536,558,286.88
  5. Step 5: Solve for x
    x = 1,536,558,286.88/61,129.89
  6. Step 6: Final answer
    x = 25,135.96

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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.