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Finding the Third Proportional to 13,324.50 and 20,505

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Solution

The third proportional to 13,324.50 and 20,505 is: 31,555.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.50 : 20,505 = 20,505 : x
  2. Step 2: Convert to fraction form
    13,324.50/20,505 = 20,505/x
  3. Step 3: Cross multiply
    13,324.50x = 20,505 × 20,505
  4. Step 4: Simplify right side
    13,324.50x = 420,455,025
  5. Step 5: Solve for x
    x = 420,455,025/13,324.50
  6. Step 6: Final answer
    x = 31,555.03

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.