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Finding the Fourth Proportional to 68,893.16, 95,074.31 and 38,680.84

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Solution

The fourth proportional to 68,893.16, 95,074.31 and 38,680.84 is: 53,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.16 : 95,074.31 = 38,680.84 : x
  2. Step 2: Convert to fraction form
    68,893.16/95,074.31 = 38,680.84/x
  3. Step 3: Cross multiply
    68,893.16x = 95,074.31 × 38,680.84
  4. Step 4: Simplify right side
    68,893.16x = 3,677,553,504.44
  5. Step 5: Solve for x
    x = 3,677,553,504.44/68,893.16
  6. Step 6: Final answer
    x = 53,380.53

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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.