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Finding the Third Proportional to 4,781.25 and 7,173

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Solution

The third proportional to 4,781.25 and 7,173 is: 10,761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.25 : 7,173 = 7,173 : x
  2. Step 2: Convert to fraction form
    4,781.25/7,173 = 7,173/x
  3. Step 3: Cross multiply
    4,781.25x = 7,173 × 7,173
  4. Step 4: Simplify right side
    4,781.25x = 51,451,929
  5. Step 5: Solve for x
    x = 51,451,929/4,781.25
  6. Step 6: Final answer
    x = 10,761.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.