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Finding the Fourth Proportional to 13,104.74, 18,102.92 and 11,687.97

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Solution

The fourth proportional to 13,104.74, 18,102.92 and 11,687.97 is: 16,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.74 : 18,102.92 = 11,687.97 : x
  2. Step 2: Convert to fraction form
    13,104.74/18,102.92 = 11,687.97/x
  3. Step 3: Cross multiply
    13,104.74x = 18,102.92 × 11,687.97
  4. Step 4: Simplify right side
    13,104.74x = 211,586,385.87
  5. Step 5: Solve for x
    x = 211,586,385.87/13,104.74
  6. Step 6: Final answer
    x = 16,145.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.