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Finding the Fourth Proportional to 217,960.99, 327,067.85 and 91,591.27

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Solution

The fourth proportional to 217,960.99, 327,067.85 and 91,591.27 is: 137,440.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,960.99 : 327,067.85 = 91,591.27 : x
  2. Step 2: Convert to fraction form
    217,960.99/327,067.85 = 91,591.27/x
  3. Step 3: Cross multiply
    217,960.99x = 327,067.85 × 91,591.27
  4. Step 4: Simplify right side
    217,960.99x = 29,956,559,757.67
  5. Step 5: Solve for x
    x = 29,956,559,757.67/217,960.99
  6. Step 6: Final answer
    x = 137,440.01

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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.