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Finding the Third Proportional to 1,916 and 3,099

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Solution

The third proportional to 1,916 and 3,099 is: 5,012.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916 : 3,099 = 3,099 : x
  2. Step 2: Convert to fraction form
    1,916/3,099 = 3,099/x
  3. Step 3: Cross multiply
    1,916x = 3,099 × 3,099
  4. Step 4: Simplify right side
    1,916x = 9,603,801
  5. Step 5: Solve for x
    x = 9,603,801/1,916
  6. Step 6: Final answer
    x = 5,012.42

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.