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Finding the Third Proportional to 2,992 and 4,080

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Solution

The third proportional to 2,992 and 4,080 is: 5,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992 : 4,080 = 4,080 : x
  2. Step 2: Convert to fraction form
    2,992/4,080 = 4,080/x
  3. Step 3: Cross multiply
    2,992x = 4,080 × 4,080
  4. Step 4: Simplify right side
    2,992x = 16,646,400
  5. Step 5: Solve for x
    x = 16,646,400/2,992
  6. Step 6: Final answer
    x = 5,563.64

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.