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Finding the Fourth Proportional to 168,082.76, 231,954.26 and 91,601.89

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Solution

The fourth proportional to 168,082.76, 231,954.26 and 91,601.89 is: 126,410.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,082.76 : 231,954.26 = 91,601.89 : x
  2. Step 2: Convert to fraction form
    168,082.76/231,954.26 = 91,601.89/x
  3. Step 3: Cross multiply
    168,082.76x = 231,954.26 × 91,601.89
  4. Step 4: Simplify right side
    168,082.76x = 21,247,448,609.55
  5. Step 5: Solve for x
    x = 21,247,448,609.55/168,082.76
  6. Step 6: Final answer
    x = 126,410.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.