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Finding the Third Proportional to 996 and 2,100

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Solution

The third proportional to 996 and 2,100 is: 4,427.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    996 : 2,100 = 2,100 : x
  2. Step 2: Convert to fraction form
    996/2,100 = 2,100/x
  3. Step 3: Cross multiply
    996x = 2,100 × 2,100
  4. Step 4: Simplify right side
    996x = 4,410,000
  5. Step 5: Solve for x
    x = 4,410,000/996
  6. Step 6: Final answer
    x = 4,427.71

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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.