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Finding the Fourth Proportional to 159,637.53, 220,331.71 and 91,701.11

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Solution

The fourth proportional to 159,637.53, 220,331.71 and 91,701.11 is: 126,565.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,637.53 : 220,331.71 = 91,701.11 : x
  2. Step 2: Convert to fraction form
    159,637.53/220,331.71 = 91,701.11/x
  3. Step 3: Cross multiply
    159,637.53x = 220,331.71 × 91,701.11
  4. Step 4: Simplify right side
    159,637.53x = 20,204,663,040.65
  5. Step 5: Solve for x
    x = 20,204,663,040.65/159,637.53
  6. Step 6: Final answer
    x = 126,565.87

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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.