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Finding the Third Proportional to 16,653 and 36,243

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Solution

The third proportional to 16,653 and 36,243 is: 78,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,653 : 36,243 = 36,243 : x
  2. Step 2: Convert to fraction form
    16,653/36,243 = 36,243/x
  3. Step 3: Cross multiply
    16,653x = 36,243 × 36,243
  4. Step 4: Simplify right side
    16,653x = 1,313,555,049
  5. Step 5: Solve for x
    x = 1,313,555,049/16,653
  6. Step 6: Final answer
    x = 78,877.98

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.