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Finding the Third Proportional to 12,842 and 27,628

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Solution

The third proportional to 12,842 and 27,628 is: 59,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,842 : 27,628 = 27,628 : x
  2. Step 2: Convert to fraction form
    12,842/27,628 = 27,628/x
  3. Step 3: Cross multiply
    12,842x = 27,628 × 27,628
  4. Step 4: Simplify right side
    12,842x = 763,306,384
  5. Step 5: Solve for x
    x = 763,306,384/12,842
  6. Step 6: Final answer
    x = 59,438.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.