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Finding the Third Proportional to 21,653 and 46,542

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Solution

The third proportional to 21,653 and 46,542 is: 100,039.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653 : 46,542 = 46,542 : x
  2. Step 2: Convert to fraction form
    21,653/46,542 = 46,542/x
  3. Step 3: Cross multiply
    21,653x = 46,542 × 46,542
  4. Step 4: Simplify right side
    21,653x = 2,166,157,764
  5. Step 5: Solve for x
    x = 2,166,157,764/21,653
  6. Step 6: Final answer
    x = 100,039.61

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.