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Finding the Third Proportional to 876 and 2,015

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Solution

The third proportional to 876 and 2,015 is: 4,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    876 : 2,015 = 2,015 : x
  2. Step 2: Convert to fraction form
    876/2,015 = 2,015/x
  3. Step 3: Cross multiply
    876x = 2,015 × 2,015
  4. Step 4: Simplify right side
    876x = 4,060,225
  5. Step 5: Solve for x
    x = 4,060,225/876
  6. Step 6: Final answer
    x = 4,634.96

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.