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Finding the Third Proportional to 41,920 and 64,340

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Solution

The third proportional to 41,920 and 64,340 is: 98,750.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,920 : 64,340 = 64,340 : x
  2. Step 2: Convert to fraction form
    41,920/64,340 = 64,340/x
  3. Step 3: Cross multiply
    41,920x = 64,340 × 64,340
  4. Step 4: Simplify right side
    41,920x = 4,139,635,600
  5. Step 5: Solve for x
    x = 4,139,635,600/41,920
  6. Step 6: Final answer
    x = 98,750.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.