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Finding the Third Proportional to 15,625 and 33,915

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Solution

The third proportional to 15,625 and 33,915 is: 73,614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625 : 33,915 = 33,915 : x
  2. Step 2: Convert to fraction form
    15,625/33,915 = 33,915/x
  3. Step 3: Cross multiply
    15,625x = 33,915 × 33,915
  4. Step 4: Simplify right side
    15,625x = 1,150,227,225
  5. Step 5: Solve for x
    x = 1,150,227,225/15,625
  6. Step 6: Final answer
    x = 73,614.54

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.