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Finding the Fourth Proportional to 218,990.91, 327,892.78 and 113,588.44

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Solution

The fourth proportional to 218,990.91, 327,892.78 and 113,588.44 is: 170,074.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,990.91 : 327,892.78 = 113,588.44 : x
  2. Step 2: Convert to fraction form
    218,990.91/327,892.78 = 113,588.44/x
  3. Step 3: Cross multiply
    218,990.91x = 327,892.78 × 113,588.44
  4. Step 4: Simplify right side
    218,990.91x = 37,244,829,083.49
  5. Step 5: Solve for x
    x = 37,244,829,083.49/218,990.91
  6. Step 6: Final answer
    x = 170,074.78

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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.