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Finding the Third Proportional to 28,318 and 43,936

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Solution

The third proportional to 28,318 and 43,936 is: 68,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318 : 43,936 = 43,936 : x
  2. Step 2: Convert to fraction form
    28,318/43,936 = 43,936/x
  3. Step 3: Cross multiply
    28,318x = 43,936 × 43,936
  4. Step 4: Simplify right side
    28,318x = 1,930,372,096
  5. Step 5: Solve for x
    x = 1,930,372,096/28,318
  6. Step 6: Final answer
    x = 68,167.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.