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Finding the Fourth Proportional to 218,049.39, 327,200.99 and 91,680.48

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Solution

The fourth proportional to 218,049.39, 327,200.99 and 91,680.48 is: 137,574.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,049.39 : 327,200.99 = 91,680.48 : x
  2. Step 2: Convert to fraction form
    218,049.39/327,200.99 = 91,680.48/x
  3. Step 3: Cross multiply
    218,049.39x = 327,200.99 × 91,680.48
  4. Step 4: Simplify right side
    218,049.39x = 29,997,943,361.27
  5. Step 5: Solve for x
    x = 29,997,943,361.27/218,049.39
  6. Step 6: Final answer
    x = 137,574.08

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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.