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Finding the Third Proportional to 942 and 1,992

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Solution

The third proportional to 942 and 1,992 is: 4,212.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    942 : 1,992 = 1,992 : x
  2. Step 2: Convert to fraction form
    942/1,992 = 1,992/x
  3. Step 3: Cross multiply
    942x = 1,992 × 1,992
  4. Step 4: Simplify right side
    942x = 3,968,064
  5. Step 5: Solve for x
    x = 3,968,064/942
  6. Step 6: Final answer
    x = 4,212.38

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.