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Finding the Third Proportional to 17,720 and 38,356

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Solution

The third proportional to 17,720 and 38,356 is: 83,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720 : 38,356 = 38,356 : x
  2. Step 2: Convert to fraction form
    17,720/38,356 = 38,356/x
  3. Step 3: Cross multiply
    17,720x = 38,356 × 38,356
  4. Step 4: Simplify right side
    17,720x = 1,471,182,736
  5. Step 5: Solve for x
    x = 1,471,182,736/17,720
  6. Step 6: Final answer
    x = 83,023.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.