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Finding the Third Proportional to 1,996 and 4,247

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Solution

The third proportional to 1,996 and 4,247 is: 9,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996 : 4,247 = 4,247 : x
  2. Step 2: Convert to fraction form
    1,996/4,247 = 4,247/x
  3. Step 3: Cross multiply
    1,996x = 4,247 × 4,247
  4. Step 4: Simplify right side
    1,996x = 18,037,009
  5. Step 5: Solve for x
    x = 18,037,009/1,996
  6. Step 6: Final answer
    x = 9,036.58

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.