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Finding the Third Proportional to 20,392 and 27,516

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Solution

The third proportional to 20,392 and 27,516 is: 37,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392 : 27,516 = 27,516 : x
  2. Step 2: Convert to fraction form
    20,392/27,516 = 27,516/x
  3. Step 3: Cross multiply
    20,392x = 27,516 × 27,516
  4. Step 4: Simplify right side
    20,392x = 757,130,256
  5. Step 5: Solve for x
    x = 757,130,256/20,392
  6. Step 6: Final answer
    x = 37,128.79

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.