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Finding the Third Proportional to 13,351.50 and 20,574

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Solution

The third proportional to 13,351.50 and 20,574 is: 31,703.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.50 : 20,574 = 20,574 : x
  2. Step 2: Convert to fraction form
    13,351.50/20,574 = 20,574/x
  3. Step 3: Cross multiply
    13,351.50x = 20,574 × 20,574
  4. Step 4: Simplify right side
    13,351.50x = 423,289,476
  5. Step 5: Solve for x
    x = 423,289,476/13,351.50
  6. Step 6: Final answer
    x = 31,703.51

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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.