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Finding the Third Proportional to 916 and 2,110

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Solution

The third proportional to 916 and 2,110 is: 4,860.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    916 : 2,110 = 2,110 : x
  2. Step 2: Convert to fraction form
    916/2,110 = 2,110/x
  3. Step 3: Cross multiply
    916x = 2,110 × 2,110
  4. Step 4: Simplify right side
    916x = 4,452,100
  5. Step 5: Solve for x
    x = 4,452,100/916
  6. Step 6: Final answer
    x = 4,860.37

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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.