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Finding the Fourth Proportional to 217,992.92, 327,034.20 and 91,558.76

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Solution

The fourth proportional to 217,992.92, 327,034.20 and 91,558.76 is: 137,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,992.92 : 327,034.20 = 91,558.76 : x
  2. Step 2: Convert to fraction form
    217,992.92/327,034.20 = 91,558.76/x
  3. Step 3: Cross multiply
    217,992.92x = 327,034.20 × 91,558.76
  4. Step 4: Simplify right side
    217,992.92x = 29,942,845,829.59
  5. Step 5: Solve for x
    x = 29,942,845,829.59/217,992.92
  6. Step 6: Final answer
    x = 137,356.96

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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.