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Finding the Fourth Proportional to 61,251.74, 91,869.23 and 16,872.11

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Solution

The fourth proportional to 61,251.74, 91,869.23 and 16,872.11 is: 25,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,251.74 : 91,869.23 = 16,872.11 : x
  2. Step 2: Convert to fraction form
    61,251.74/91,869.23 = 16,872.11/x
  3. Step 3: Cross multiply
    61,251.74x = 91,869.23 × 16,872.11
  4. Step 4: Simplify right side
    61,251.74x = 1,550,027,754.18
  5. Step 5: Solve for x
    x = 1,550,027,754.18/61,251.74
  6. Step 6: Final answer
    x = 25,305.86

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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.