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Finding the Fourth Proportional to 68,857.19, 103,286.91 and 23,879.96

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Solution

The fourth proportional to 68,857.19, 103,286.91 and 23,879.96 is: 35,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,857.19 : 103,286.91 = 23,879.96 : x
  2. Step 2: Convert to fraction form
    68,857.19/103,286.91 = 23,879.96/x
  3. Step 3: Cross multiply
    68,857.19x = 103,286.91 × 23,879.96
  4. Step 4: Simplify right side
    68,857.19x = 2,466,487,279.32
  5. Step 5: Solve for x
    x = 2,466,487,279.32/68,857.19
  6. Step 6: Final answer
    x = 35,820.33

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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.