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Finding the Third Proportional to 2,554 and 3,959

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Solution

The third proportional to 2,554 and 3,959 is: 6,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554 : 3,959 = 3,959 : x
  2. Step 2: Convert to fraction form
    2,554/3,959 = 3,959/x
  3. Step 3: Cross multiply
    2,554x = 3,959 × 3,959
  4. Step 4: Simplify right side
    2,554x = 15,673,681
  5. Step 5: Solve for x
    x = 15,673,681/2,554
  6. Step 6: Final answer
    x = 6,136.92

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.