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Finding the Third Proportional to 2,993 and 6,911

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Solution

The third proportional to 2,993 and 6,911 is: 15,957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993 : 6,911 = 6,911 : x
  2. Step 2: Convert to fraction form
    2,993/6,911 = 6,911/x
  3. Step 3: Cross multiply
    2,993x = 6,911 × 6,911
  4. Step 4: Simplify right side
    2,993x = 47,761,921
  5. Step 5: Solve for x
    x = 47,761,921/2,993
  6. Step 6: Final answer
    x = 15,957.88

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.