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Finding the Fourth Proportional to 80,212.54, 120,437.09 and 44,743.16

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Solution

The fourth proportional to 80,212.54, 120,437.09 and 44,743.16 is: 67,180.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,212.54 : 120,437.09 = 44,743.16 : x
  2. Step 2: Convert to fraction form
    80,212.54/120,437.09 = 44,743.16/x
  3. Step 3: Cross multiply
    80,212.54x = 120,437.09 × 44,743.16
  4. Step 4: Simplify right side
    80,212.54x = 5,388,735,987.80
  5. Step 5: Solve for x
    x = 5,388,735,987.80/80,212.54
  6. Step 6: Final answer
    x = 67,180.72

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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.