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Finding the Fourth Proportional to 77,785.80, 107,344.80 and 44,251.80

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Solution

The fourth proportional to 77,785.80, 107,344.80 and 44,251.80 is: 61,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,785.80 : 107,344.80 = 44,251.80 : x
  2. Step 2: Convert to fraction form
    77,785.80/107,344.80 = 44,251.80/x
  3. Step 3: Cross multiply
    77,785.80x = 107,344.80 × 44,251.80
  4. Step 4: Simplify right side
    77,785.80x = 4,750,200,620.64
  5. Step 5: Solve for x
    x = 4,750,200,620.64/77,785.80
  6. Step 6: Final answer
    x = 61,067.71

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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.