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Finding the Third Proportional to 30,554 and 66,256

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Solution

The third proportional to 30,554 and 66,256 is: 143,675.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,554 : 66,256 = 66,256 : x
  2. Step 2: Convert to fraction form
    30,554/66,256 = 66,256/x
  3. Step 3: Cross multiply
    30,554x = 66,256 × 66,256
  4. Step 4: Simplify right side
    30,554x = 4,389,857,536
  5. Step 5: Solve for x
    x = 4,389,857,536/30,554
  6. Step 6: Final answer
    x = 143,675.38

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.