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Finding the Fourth Proportional to 327,355.20, 490,720.32 and 186,842.88

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Solution

The fourth proportional to 327,355.20, 490,720.32 and 186,842.88 is: 280,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,355.20 : 490,720.32 = 186,842.88 : x
  2. Step 2: Convert to fraction form
    327,355.20/490,720.32 = 186,842.88/x
  3. Step 3: Cross multiply
    327,355.20x = 490,720.32 × 186,842.88
  4. Step 4: Simplify right side
    327,355.20x = 91,687,597,863.32
  5. Step 5: Solve for x
    x = 91,687,597,863.32/327,355.20
  6. Step 6: Final answer
    x = 280,085.97

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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.