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Finding the Fourth Proportional to 18,543.56, 27,808.79 and 8,013.15

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Solution

The fourth proportional to 18,543.56, 27,808.79 and 8,013.15 is: 12,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543.56 : 27,808.79 = 8,013.15 : x
  2. Step 2: Convert to fraction form
    18,543.56/27,808.79 = 8,013.15/x
  3. Step 3: Cross multiply
    18,543.56x = 27,808.79 × 8,013.15
  4. Step 4: Simplify right side
    18,543.56x = 222,835,965.52
  5. Step 5: Solve for x
    x = 222,835,965.52/18,543.56
  6. Step 6: Final answer
    x = 12,016.90

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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.