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Finding the Third Proportional to 20,947.50 and 45,175

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Solution

The third proportional to 20,947.50 and 45,175 is: 97,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.50 : 45,175 = 45,175 : x
  2. Step 2: Convert to fraction form
    20,947.50/45,175 = 45,175/x
  3. Step 3: Cross multiply
    20,947.50x = 45,175 × 45,175
  4. Step 4: Simplify right side
    20,947.50x = 2,040,780,625
  5. Step 5: Solve for x
    x = 2,040,780,625/20,947.50
  6. Step 6: Final answer
    x = 97,423.59

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.