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Finding the Fourth Proportional to 18,456.86, 27,701.04 and 7,371.38

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Solution

The fourth proportional to 18,456.86, 27,701.04 and 7,371.38 is: 11,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.86 : 27,701.04 = 7,371.38 : x
  2. Step 2: Convert to fraction form
    18,456.86/27,701.04 = 7,371.38/x
  3. Step 3: Cross multiply
    18,456.86x = 27,701.04 × 7,371.38
  4. Step 4: Simplify right side
    18,456.86x = 204,194,892.24
  5. Step 5: Solve for x
    x = 204,194,892.24/18,456.86
  6. Step 6: Final answer
    x = 11,063.36

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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.