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Finding the Fourth Proportional to 90,233.64, 135,363.42 and 27,909

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Solution

The fourth proportional to 90,233.64, 135,363.42 and 27,909 is: 41,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,233.64 : 135,363.42 = 27,909 : x
  2. Step 2: Convert to fraction form
    90,233.64/135,363.42 = 27,909/x
  3. Step 3: Cross multiply
    90,233.64x = 135,363.42 × 27,909
  4. Step 4: Simplify right side
    90,233.64x = 3,777,857,688.78
  5. Step 5: Solve for x
    x = 3,777,857,688.78/90,233.64
  6. Step 6: Final answer
    x = 41,867.51

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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.