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Finding the Third Proportional to 876 and 1,351

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Solution

The third proportional to 876 and 1,351 is: 2,083.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    876 : 1,351 = 1,351 : x
  2. Step 2: Convert to fraction form
    876/1,351 = 1,351/x
  3. Step 3: Cross multiply
    876x = 1,351 × 1,351
  4. Step 4: Simplify right side
    876x = 1,825,201
  5. Step 5: Solve for x
    x = 1,825,201/876
  6. Step 6: Final answer
    x = 2,083.56

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.