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Finding the Third Proportional to 631 and 1,048

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Solution

The third proportional to 631 and 1,048 is: 1,740.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    631 : 1,048 = 1,048 : x
  2. Step 2: Convert to fraction form
    631/1,048 = 1,048/x
  3. Step 3: Cross multiply
    631x = 1,048 × 1,048
  4. Step 4: Simplify right side
    631x = 1,098,304
  5. Step 5: Solve for x
    x = 1,098,304/631
  6. Step 6: Final answer
    x = 1,740.58

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.