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Finding the Fourth Proportional to 69,863.72, 96,414.58 and 39,650.31

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Solution

The fourth proportional to 69,863.72, 96,414.58 and 39,650.31 is: 54,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,863.72 : 96,414.58 = 39,650.31 : x
  2. Step 2: Convert to fraction form
    69,863.72/96,414.58 = 39,650.31/x
  3. Step 3: Cross multiply
    69,863.72x = 96,414.58 × 39,650.31
  4. Step 4: Simplify right side
    69,863.72x = 3,822,867,923.57
  5. Step 5: Solve for x
    x = 3,822,867,923.57/69,863.72
  6. Step 6: Final answer
    x = 54,718.93

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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.