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Finding the Third Proportional to 764 and 875

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Solution

The third proportional to 764 and 875 is: 1,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    764 : 875 = 875 : x
  2. Step 2: Convert to fraction form
    764/875 = 875/x
  3. Step 3: Cross multiply
    764x = 875 × 875
  4. Step 4: Simplify right side
    764x = 765,625
  5. Step 5: Solve for x
    x = 765,625/764
  6. Step 6: Final answer
    x = 1,002.13

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.