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Finding the Fourth Proportional to 18,016.78, 27,032.96 and 9,687.06

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Solution

The fourth proportional to 18,016.78, 27,032.96 and 9,687.06 is: 14,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,016.78 : 27,032.96 = 9,687.06 : x
  2. Step 2: Convert to fraction form
    18,016.78/27,032.96 = 9,687.06/x
  3. Step 3: Cross multiply
    18,016.78x = 27,032.96 × 9,687.06
  4. Step 4: Simplify right side
    18,016.78x = 261,869,905.50
  5. Step 5: Solve for x
    x = 261,869,905.50/18,016.78
  6. Step 6: Final answer
    x = 14,534.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.