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Finding the Third Proportional to 43,728 and 67,224

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Solution

The third proportional to 43,728 and 67,224 is: 103,344.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,728 : 67,224 = 67,224 : x
  2. Step 2: Convert to fraction form
    43,728/67,224 = 67,224/x
  3. Step 3: Cross multiply
    43,728x = 67,224 × 67,224
  4. Step 4: Simplify right side
    43,728x = 4,519,066,176
  5. Step 5: Solve for x
    x = 4,519,066,176/43,728
  6. Step 6: Final answer
    x = 103,344.91

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.