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Finding the Fourth Proportional to 51,279.80, 76,919.70 and 44,367.80

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Solution

The fourth proportional to 51,279.80, 76,919.70 and 44,367.80 is: 66,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.80 : 76,919.70 = 44,367.80 : x
  2. Step 2: Convert to fraction form
    51,279.80/76,919.70 = 44,367.80/x
  3. Step 3: Cross multiply
    51,279.80x = 76,919.70 × 44,367.80
  4. Step 4: Simplify right side
    51,279.80x = 3,412,757,865.66
  5. Step 5: Solve for x
    x = 3,412,757,865.66/51,279.80
  6. Step 6: Final answer
    x = 66,551.70

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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.