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Finding the Fourth Proportional to 69,279.52, 103,919.28 and 27,755.68

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Solution

The fourth proportional to 69,279.52, 103,919.28 and 27,755.68 is: 41,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,279.52 : 103,919.28 = 27,755.68 : x
  2. Step 2: Convert to fraction form
    69,279.52/103,919.28 = 27,755.68/x
  3. Step 3: Cross multiply
    69,279.52x = 103,919.28 × 27,755.68
  4. Step 4: Simplify right side
    69,279.52x = 2,884,350,281.51
  5. Step 5: Solve for x
    x = 2,884,350,281.51/69,279.52
  6. Step 6: Final answer
    x = 41,633.52

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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.