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Finding the Fourth Proportional to 69,481.94, 95,872.43 and 38,855.60

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Solution

The fourth proportional to 69,481.94, 95,872.43 and 38,855.60 is: 53,613.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,481.94 : 95,872.43 = 38,855.60 : x
  2. Step 2: Convert to fraction form
    69,481.94/95,872.43 = 38,855.60/x
  3. Step 3: Cross multiply
    69,481.94x = 95,872.43 × 38,855.60
  4. Step 4: Simplify right side
    69,481.94x = 3,725,180,408.88
  5. Step 5: Solve for x
    x = 3,725,180,408.88/69,481.94
  6. Step 6: Final answer
    x = 53,613.65

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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.