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Finding the Third Proportional to 28,634.50 and 62,915

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Solution

The third proportional to 28,634.50 and 62,915 is: 138,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,634.50 : 62,915 = 62,915 : x
  2. Step 2: Convert to fraction form
    28,634.50/62,915 = 62,915/x
  3. Step 3: Cross multiply
    28,634.50x = 62,915 × 62,915
  4. Step 4: Simplify right side
    28,634.50x = 3,958,297,225
  5. Step 5: Solve for x
    x = 3,958,297,225/28,634.50
  6. Step 6: Final answer
    x = 138,235.25

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.