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Finding the Fourth Proportional to 80,535.76, 111,139.08 and 44,724.88

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Solution

The fourth proportional to 80,535.76, 111,139.08 and 44,724.88 is: 61,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,535.76 : 111,139.08 = 44,724.88 : x
  2. Step 2: Convert to fraction form
    80,535.76/111,139.08 = 44,724.88/x
  3. Step 3: Cross multiply
    80,535.76x = 111,139.08 × 44,724.88
  4. Step 4: Simplify right side
    80,535.76x = 4,970,682,016.31
  5. Step 5: Solve for x
    x = 4,970,682,016.31/80,535.76
  6. Step 6: Final answer
    x = 61,720.19

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1.5x scale

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.