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Finding the Fourth Proportional to 18,666.03, 27,999.05 and 5,517.38

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Solution

The fourth proportional to 18,666.03, 27,999.05 and 5,517.38 is: 8,276.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.03 : 27,999.05 = 5,517.38 : x
  2. Step 2: Convert to fraction form
    18,666.03/27,999.05 = 5,517.38/x
  3. Step 3: Cross multiply
    18,666.03x = 27,999.05 × 5,517.38
  4. Step 4: Simplify right side
    18,666.03x = 154,481,230.91
  5. Step 5: Solve for x
    x = 154,481,230.91/18,666.03
  6. Step 6: Final answer
    x = 8,276.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.