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Finding the Third Proportional to 17,863.88 and 39,231

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Solution

The third proportional to 17,863.88 and 39,231 is: 86,155.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,863.88 : 39,231 = 39,231 : x
  2. Step 2: Convert to fraction form
    17,863.88/39,231 = 39,231/x
  3. Step 3: Cross multiply
    17,863.88x = 39,231 × 39,231
  4. Step 4: Simplify right side
    17,863.88x = 1,539,071,361
  5. Step 5: Solve for x
    x = 1,539,071,361/17,863.88
  6. Step 6: Final answer
    x = 86,155.52

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.