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Finding the Third Proportional to 20,122.75 and 43,985

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Solution

The third proportional to 20,122.75 and 43,985 is: 96,143.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.75 : 43,985 = 43,985 : x
  2. Step 2: Convert to fraction form
    20,122.75/43,985 = 43,985/x
  3. Step 3: Cross multiply
    20,122.75x = 43,985 × 43,985
  4. Step 4: Simplify right side
    20,122.75x = 1,934,680,225
  5. Step 5: Solve for x
    x = 1,934,680,225/20,122.75
  6. Step 6: Final answer
    x = 96,143.93

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.