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Finding the Third Proportional to 3,122 and 6,893

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Solution

The third proportional to 3,122 and 6,893 is: 15,218.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122 : 6,893 = 6,893 : x
  2. Step 2: Convert to fraction form
    3,122/6,893 = 6,893/x
  3. Step 3: Cross multiply
    3,122x = 6,893 × 6,893
  4. Step 4: Simplify right side
    3,122x = 47,513,449
  5. Step 5: Solve for x
    x = 47,513,449/3,122
  6. Step 6: Final answer
    x = 15,218.91

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.