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Finding the Third Proportional to 1,424.25 and 3,105

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Solution

The third proportional to 1,424.25 and 3,105 is: 6,769.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.25 : 3,105 = 3,105 : x
  2. Step 2: Convert to fraction form
    1,424.25/3,105 = 3,105/x
  3. Step 3: Cross multiply
    1,424.25x = 3,105 × 3,105
  4. Step 4: Simplify right side
    1,424.25x = 9,641,025
  5. Step 5: Solve for x
    x = 9,641,025/1,424.25
  6. Step 6: Final answer
    x = 6,769.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.