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Finding the Third Proportional to 767.25 and 1,251

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Solution

The third proportional to 767.25 and 1,251 is: 2,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.25 : 1,251 = 1,251 : x
  2. Step 2: Convert to fraction form
    767.25/1,251 = 1,251/x
  3. Step 3: Cross multiply
    767.25x = 1,251 × 1,251
  4. Step 4: Simplify right side
    767.25x = 1,565,001
  5. Step 5: Solve for x
    x = 1,565,001/767.25
  6. Step 6: Final answer
    x = 2,039.75

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.