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Finding the Third Proportional to 992 and 1,912

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Solution

The third proportional to 992 and 1,912 is: 3,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    992 : 1,912 = 1,912 : x
  2. Step 2: Convert to fraction form
    992/1,912 = 1,912/x
  3. Step 3: Cross multiply
    992x = 1,912 × 1,912
  4. Step 4: Simplify right side
    992x = 3,655,744
  5. Step 5: Solve for x
    x = 3,655,744/992
  6. Step 6: Final answer
    x = 3,685.23

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Why These Related Problems?

These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.