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Finding the Third Proportional to 4,867 and 11,917

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Solution

The third proportional to 4,867 and 11,917 is: 29,179.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,867 : 11,917 = 11,917 : x
  2. Step 2: Convert to fraction form
    4,867/11,917 = 11,917/x
  3. Step 3: Cross multiply
    4,867x = 11,917 × 11,917
  4. Step 4: Simplify right side
    4,867x = 142,014,889
  5. Step 5: Solve for x
    x = 142,014,889/4,867
  6. Step 6: Final answer
    x = 29,179.14

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.