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Finding the Third Proportional to 1,708 and 3,916

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Solution

The third proportional to 1,708 and 3,916 is: 8,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708 : 3,916 = 3,916 : x
  2. Step 2: Convert to fraction form
    1,708/3,916 = 3,916/x
  3. Step 3: Cross multiply
    1,708x = 3,916 × 3,916
  4. Step 4: Simplify right side
    1,708x = 15,335,056
  5. Step 5: Solve for x
    x = 15,335,056/1,708
  6. Step 6: Final answer
    x = 8,978.37

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Why These Related Problems?

These problems maintain the same ratio (2.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.