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Finding the Third Proportional to 56,515.50 and 122,868

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Solution

The third proportional to 56,515.50 and 122,868 is: 267,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,515.50 : 122,868 = 122,868 : x
  2. Step 2: Convert to fraction form
    56,515.50/122,868 = 122,868/x
  3. Step 3: Cross multiply
    56,515.50x = 122,868 × 122,868
  4. Step 4: Simplify right side
    56,515.50x = 15,096,545,424
  5. Step 5: Solve for x
    x = 15,096,545,424/56,515.50
  6. Step 6: Final answer
    x = 267,122.21

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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.