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Finding the Fourth Proportional to 168,954.91, 233,156 and 91,428.86

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Solution

The fourth proportional to 168,954.91, 233,156 and 91,428.86 is: 126,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,954.91 : 233,156 = 91,428.86 : x
  2. Step 2: Convert to fraction form
    168,954.91/233,156 = 91,428.86/x
  3. Step 3: Cross multiply
    168,954.91x = 233,156 × 91,428.86
  4. Step 4: Simplify right side
    168,954.91x = 21,317,187,282.16
  5. Step 5: Solve for x
    x = 21,317,187,282.16/168,954.91
  6. Step 6: Final answer
    x = 126,170.87

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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.