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Finding the Third Proportional to 1,099.20 and 1,425.73

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Solution

The third proportional to 1,099.20 and 1,425.73 is: 1,849.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.20 : 1,425.73 = 1,425.73 : x
  2. Step 2: Convert to fraction form
    1,099.20/1,425.73 = 1,425.73/x
  3. Step 3: Cross multiply
    1,099.20x = 1,425.73 × 1,425.73
  4. Step 4: Simplify right side
    1,099.20x = 2,032,696.23
  5. Step 5: Solve for x
    x = 2,032,696.23/1,099.20
  6. Step 6: Final answer
    x = 1,849.26

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.