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Finding the Third Proportional to 1,966 and 4,245

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Solution

The third proportional to 1,966 and 4,245 is: 9,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966 : 4,245 = 4,245 : x
  2. Step 2: Convert to fraction form
    1,966/4,245 = 4,245/x
  3. Step 3: Cross multiply
    1,966x = 4,245 × 4,245
  4. Step 4: Simplify right side
    1,966x = 18,020,025
  5. Step 5: Solve for x
    x = 18,020,025/1,966
  6. Step 6: Final answer
    x = 9,165.83

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.