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Finding the Third Proportional to 3,396 and 5,129

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Solution

The third proportional to 3,396 and 5,129 is: 7,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396 : 5,129 = 5,129 : x
  2. Step 2: Convert to fraction form
    3,396/5,129 = 5,129/x
  3. Step 3: Cross multiply
    3,396x = 5,129 × 5,129
  4. Step 4: Simplify right side
    3,396x = 26,306,641
  5. Step 5: Solve for x
    x = 26,306,641/3,396
  6. Step 6: Final answer
    x = 7,746.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.