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Finding the Third Proportional to 2,191 and 3,367

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Solution

The third proportional to 2,191 and 3,367 is: 5,174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191 : 3,367 = 3,367 : x
  2. Step 2: Convert to fraction form
    2,191/3,367 = 3,367/x
  3. Step 3: Cross multiply
    2,191x = 3,367 × 3,367
  4. Step 4: Simplify right side
    2,191x = 11,336,689
  5. Step 5: Solve for x
    x = 11,336,689/2,191
  6. Step 6: Final answer
    x = 5,174.21

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.