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Finding the Third Proportional to 2,531 and 3,613

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Solution

The third proportional to 2,531 and 3,613 is: 5,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531 : 3,613 = 3,613 : x
  2. Step 2: Convert to fraction form
    2,531/3,613 = 3,613/x
  3. Step 3: Cross multiply
    2,531x = 3,613 × 3,613
  4. Step 4: Simplify right side
    2,531x = 13,053,769
  5. Step 5: Solve for x
    x = 13,053,769/2,531
  6. Step 6: Final answer
    x = 5,157.55

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.