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Finding the Fourth Proportional to 41,920.82, 62,891.22 and 12,339.62

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Solution

The fourth proportional to 41,920.82, 62,891.22 and 12,339.62 is: 18,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,920.82 : 62,891.22 = 12,339.62 : x
  2. Step 2: Convert to fraction form
    41,920.82/62,891.22 = 12,339.62/x
  3. Step 3: Cross multiply
    41,920.82x = 62,891.22 × 12,339.62
  4. Step 4: Simplify right side
    41,920.82x = 776,053,756.14
  5. Step 5: Solve for x
    x = 776,053,756.14/41,920.82
  6. Step 6: Final answer
    x = 18,512.37

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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.