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Finding the Fourth Proportional to 80,418.56, 110,978.52 and 44,609.60

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Solution

The fourth proportional to 80,418.56, 110,978.52 and 44,609.60 is: 61,561.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,418.56 : 110,978.52 = 44,609.60 : x
  2. Step 2: Convert to fraction form
    80,418.56/110,978.52 = 44,609.60/x
  3. Step 3: Cross multiply
    80,418.56x = 110,978.52 × 44,609.60
  4. Step 4: Simplify right side
    80,418.56x = 4,950,707,385.79
  5. Step 5: Solve for x
    x = 4,950,707,385.79/80,418.56
  6. Step 6: Final answer
    x = 61,561.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.