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Finding the Third Proportional to 28,057 and 43,123

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Solution

The third proportional to 28,057 and 43,123 is: 66,279.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057 : 43,123 = 43,123 : x
  2. Step 2: Convert to fraction form
    28,057/43,123 = 43,123/x
  3. Step 3: Cross multiply
    28,057x = 43,123 × 43,123
  4. Step 4: Simplify right side
    28,057x = 1,859,593,129
  5. Step 5: Solve for x
    x = 1,859,593,129/28,057
  6. Step 6: Final answer
    x = 66,279.11

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.