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Finding the Third Proportional to 39,458.25 and 53,163

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Solution

The third proportional to 39,458.25 and 53,163 is: 71,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.25 : 53,163 = 53,163 : x
  2. Step 2: Convert to fraction form
    39,458.25/53,163 = 53,163/x
  3. Step 3: Cross multiply
    39,458.25x = 53,163 × 53,163
  4. Step 4: Simplify right side
    39,458.25x = 2,826,304,569
  5. Step 5: Solve for x
    x = 2,826,304,569/39,458.25
  6. Step 6: Final answer
    x = 71,627.72

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.