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Finding the Fourth Proportional to 18,472.24, 27,717 and 10,687.60

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Solution

The fourth proportional to 18,472.24, 27,717 and 10,687.60 is: 16,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.24 : 27,717 = 10,687.60 : x
  2. Step 2: Convert to fraction form
    18,472.24/27,717 = 10,687.60/x
  3. Step 3: Cross multiply
    18,472.24x = 27,717 × 10,687.60
  4. Step 4: Simplify right side
    18,472.24x = 296,228,209.20
  5. Step 5: Solve for x
    x = 296,228,209.20/18,472.24
  6. Step 6: Final answer
    x = 16,036.40

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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.