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Finding the Fourth Proportional to 69,138.92, 103,620.90 and 44,169.32

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Solution

The fourth proportional to 69,138.92, 103,620.90 and 44,169.32 is: 66,198.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138.92 : 103,620.90 = 44,169.32 : x
  2. Step 2: Convert to fraction form
    69,138.92/103,620.90 = 44,169.32/x
  3. Step 3: Cross multiply
    69,138.92x = 103,620.90 × 44,169.32
  4. Step 4: Simplify right side
    69,138.92x = 4,576,864,690.79
  5. Step 5: Solve for x
    x = 4,576,864,690.79/69,138.92
  6. Step 6: Final answer
    x = 66,198.09

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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.