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Finding the Fourth Proportional to 80,782.66, 121,198.72 and 41,367.68

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Solution

The fourth proportional to 80,782.66, 121,198.72 and 41,367.68 is: 62,064.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,782.66 : 121,198.72 = 41,367.68 : x
  2. Step 2: Convert to fraction form
    80,782.66/121,198.72 = 41,367.68/x
  3. Step 3: Cross multiply
    80,782.66x = 121,198.72 × 41,367.68
  4. Step 4: Simplify right side
    80,782.66x = 5,013,709,865.37
  5. Step 5: Solve for x
    x = 5,013,709,865.37/80,782.66
  6. Step 6: Final answer
    x = 62,064.18

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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.