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Finding the Fourth Proportional to 82,876.75, 124,315.13 and 27,472.75

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Solution

The fourth proportional to 82,876.75, 124,315.13 and 27,472.75 is: 41,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,876.75 : 124,315.13 = 27,472.75 : x
  2. Step 2: Convert to fraction form
    82,876.75/124,315.13 = 27,472.75/x
  3. Step 3: Cross multiply
    82,876.75x = 124,315.13 × 27,472.75
  4. Step 4: Simplify right side
    82,876.75x = 3,415,278,487.71
  5. Step 5: Solve for x
    x = 3,415,278,487.71/82,876.75
  6. Step 6: Final answer
    x = 41,209.13

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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.