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Finding the Third Proportional to 1,992 and 4,928

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Solution

The third proportional to 1,992 and 4,928 is: 12,191.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992 : 4,928 = 4,928 : x
  2. Step 2: Convert to fraction form
    1,992/4,928 = 4,928/x
  3. Step 3: Cross multiply
    1,992x = 4,928 × 4,928
  4. Step 4: Simplify right side
    1,992x = 24,285,184
  5. Step 5: Solve for x
    x = 24,285,184/1,992
  6. Step 6: Final answer
    x = 12,191.36

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.