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Finding the Third Proportional to 41,720 and 89,515

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Solution

The third proportional to 41,720 and 89,515 is: 192,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,720 : 89,515 = 89,515 : x
  2. Step 2: Convert to fraction form
    41,720/89,515 = 89,515/x
  3. Step 3: Cross multiply
    41,720x = 89,515 × 89,515
  4. Step 4: Simplify right side
    41,720x = 8,012,935,225
  5. Step 5: Solve for x
    x = 8,012,935,225/41,720
  6. Step 6: Final answer
    x = 192,064.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.