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Finding the Third Proportional to 453.38 and 1,231.88

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Solution

The third proportional to 453.38 and 1,231.88 is: 3,347.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.38 : 1,231.88 = 1,231.88 : x
  2. Step 2: Convert to fraction form
    453.38/1,231.88 = 1,231.88/x
  3. Step 3: Cross multiply
    453.38x = 1,231.88 × 1,231.88
  4. Step 4: Simplify right side
    453.38x = 1,517,516.02
  5. Step 5: Solve for x
    x = 1,517,516.02/453.38
  6. Step 6: Final answer
    x = 3,347.15

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.