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Finding the Fourth Proportional to 80,993.61, 121,527.36 and 41,578.44

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Solution

The fourth proportional to 80,993.61, 121,527.36 and 41,578.44 is: 62,386.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,993.61 : 121,527.36 = 41,578.44 : x
  2. Step 2: Convert to fraction form
    80,993.61/121,527.36 = 41,578.44/x
  3. Step 3: Cross multiply
    80,993.61x = 121,527.36 × 41,578.44
  4. Step 4: Simplify right side
    80,993.61x = 5,052,918,046.12
  5. Step 5: Solve for x
    x = 5,052,918,046.12/80,993.61
  6. Step 6: Final answer
    x = 62,386.63

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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.