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Finding the Third Proportional to 1,916 and 2,914

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Solution

The third proportional to 1,916 and 2,914 is: 4,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916 : 2,914 = 2,914 : x
  2. Step 2: Convert to fraction form
    1,916/2,914 = 2,914/x
  3. Step 3: Cross multiply
    1,916x = 2,914 × 2,914
  4. Step 4: Simplify right side
    1,916x = 8,491,396
  5. Step 5: Solve for x
    x = 8,491,396/1,916
  6. Step 6: Final answer
    x = 4,431.84

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.