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Finding the Third Proportional to 20,953.50 and 31,626

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Solution

The third proportional to 20,953.50 and 31,626 is: 47,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.50 : 31,626 = 31,626 : x
  2. Step 2: Convert to fraction form
    20,953.50/31,626 = 31,626/x
  3. Step 3: Cross multiply
    20,953.50x = 31,626 × 31,626
  4. Step 4: Simplify right side
    20,953.50x = 1,000,203,876
  5. Step 5: Solve for x
    x = 1,000,203,876/20,953.50
  6. Step 6: Final answer
    x = 47,734.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.