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Finding the Third Proportional to 2,492 and 3,998

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Solution

The third proportional to 2,492 and 3,998 is: 6,414.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,492 : 3,998 = 3,998 : x
  2. Step 2: Convert to fraction form
    2,492/3,998 = 3,998/x
  3. Step 3: Cross multiply
    2,492x = 3,998 × 3,998
  4. Step 4: Simplify right side
    2,492x = 15,984,004
  5. Step 5: Solve for x
    x = 15,984,004/2,492
  6. Step 6: Final answer
    x = 6,414.13

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.