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Finding the Fourth Proportional to 18,468.92, 27,719.04 and 7,383.44

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Solution

The fourth proportional to 18,468.92, 27,719.04 and 7,383.44 is: 11,081.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.92 : 27,719.04 = 7,383.44 : x
  2. Step 2: Convert to fraction form
    18,468.92/27,719.04 = 7,383.44/x
  3. Step 3: Cross multiply
    18,468.92x = 27,719.04 × 7,383.44
  4. Step 4: Simplify right side
    18,468.92x = 204,661,868.70
  5. Step 5: Solve for x
    x = 204,661,868.70/18,468.92
  6. Step 6: Final answer
    x = 11,081.42

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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.