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Finding the Fourth Proportional to 18,453.42, 27,654.62 and 15,982.11

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Solution

The fourth proportional to 18,453.42, 27,654.62 and 15,982.11 is: 23,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.42 : 27,654.62 = 15,982.11 : x
  2. Step 2: Convert to fraction form
    18,453.42/27,654.62 = 15,982.11/x
  3. Step 3: Cross multiply
    18,453.42x = 27,654.62 × 15,982.11
  4. Step 4: Simplify right side
    18,453.42x = 441,979,098.94
  5. Step 5: Solve for x
    x = 441,979,098.94/18,453.42
  6. Step 6: Final answer
    x = 23,951.07

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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.