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Finding the Third Proportional to 996 and 1,772

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Solution

The third proportional to 996 and 1,772 is: 3,152.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    996 : 1,772 = 1,772 : x
  2. Step 2: Convert to fraction form
    996/1,772 = 1,772/x
  3. Step 3: Cross multiply
    996x = 1,772 × 1,772
  4. Step 4: Simplify right side
    996x = 3,139,984
  5. Step 5: Solve for x
    x = 3,139,984/996
  6. Step 6: Final answer
    x = 3,152.59

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.