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Finding the Fourth Proportional to 18,469.92, 27,720.54 and 7,384.44

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Solution

The fourth proportional to 18,469.92, 27,720.54 and 7,384.44 is: 11,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.92 : 27,720.54 = 7,384.44 : x
  2. Step 2: Convert to fraction form
    18,469.92/27,720.54 = 7,384.44/x
  3. Step 3: Cross multiply
    18,469.92x = 27,720.54 × 7,384.44
  4. Step 4: Simplify right side
    18,469.92x = 204,700,664.40
  5. Step 5: Solve for x
    x = 204,700,664.40/18,469.92
  6. Step 6: Final answer
    x = 11,082.92

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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.