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Finding the Third Proportional to 39,833.25 and 86,691

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Solution

The third proportional to 39,833.25 and 86,691 is: 188,669.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,833.25 : 86,691 = 86,691 : x
  2. Step 2: Convert to fraction form
    39,833.25/86,691 = 86,691/x
  3. Step 3: Cross multiply
    39,833.25x = 86,691 × 86,691
  4. Step 4: Simplify right side
    39,833.25x = 7,515,329,481
  5. Step 5: Solve for x
    x = 7,515,329,481/39,833.25
  6. Step 6: Final answer
    x = 188,669.75

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.