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Finding the Third Proportional to 20,255 and 42,123.25

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Solution

The third proportional to 20,255 and 42,123.25 is: 87,601.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255 : 42,123.25 = 42,123.25 : x
  2. Step 2: Convert to fraction form
    20,255/42,123.25 = 42,123.25/x
  3. Step 3: Cross multiply
    20,255x = 42,123.25 × 42,123.25
  4. Step 4: Simplify right side
    20,255x = 1,774,368,190.56
  5. Step 5: Solve for x
    x = 1,774,368,190.56/20,255
  6. Step 6: Final answer
    x = 87,601.49

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.