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Finding the Fourth Proportional to 68,911.65, 95,092.25 and 38,694.60

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Solution

The fourth proportional to 68,911.65, 95,092.25 and 38,694.60 is: 53,395.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,911.65 : 95,092.25 = 38,694.60 : x
  2. Step 2: Convert to fraction form
    68,911.65/95,092.25 = 38,694.60/x
  3. Step 3: Cross multiply
    68,911.65x = 95,092.25 × 38,694.60
  4. Step 4: Simplify right side
    68,911.65x = 3,679,556,383.38
  5. Step 5: Solve for x
    x = 3,679,556,383.38/68,911.65
  6. Step 6: Final answer
    x = 53,395.27

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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.