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Finding the Third Proportional to 3,926.25 and 5,160.38

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Solution

The third proportional to 3,926.25 and 5,160.38 is: 6,782.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.25 : 5,160.38 = 5,160.38 : x
  2. Step 2: Convert to fraction form
    3,926.25/5,160.38 = 5,160.38/x
  3. Step 3: Cross multiply
    3,926.25x = 5,160.38 × 5,160.38
  4. Step 4: Simplify right side
    3,926.25x = 26,629,470.14
  5. Step 5: Solve for x
    x = 26,629,470.14/3,926.25
  6. Step 6: Final answer
    x = 6,782.42

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.