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Finding the Third Proportional to 18,963 and 27,315

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Solution

The third proportional to 18,963 and 27,315 is: 39,345.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963 : 27,315 = 27,315 : x
  2. Step 2: Convert to fraction form
    18,963/27,315 = 27,315/x
  3. Step 3: Cross multiply
    18,963x = 27,315 × 27,315
  4. Step 4: Simplify right side
    18,963x = 746,109,225
  5. Step 5: Solve for x
    x = 746,109,225/18,963
  6. Step 6: Final answer
    x = 39,345.53

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.