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Finding the Third Proportional to 1,642 and 2,568

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Solution

The third proportional to 1,642 and 2,568 is: 4,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642 : 2,568 = 2,568 : x
  2. Step 2: Convert to fraction form
    1,642/2,568 = 2,568/x
  3. Step 3: Cross multiply
    1,642x = 2,568 × 2,568
  4. Step 4: Simplify right side
    1,642x = 6,594,624
  5. Step 5: Solve for x
    x = 6,594,624/1,642
  6. Step 6: Final answer
    x = 4,016.21

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.