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Finding the Third Proportional to 69,728 and 106,224

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Solution

The third proportional to 69,728 and 106,224 is: 161,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,728 : 106,224 = 106,224 : x
  2. Step 2: Convert to fraction form
    69,728/106,224 = 106,224/x
  3. Step 3: Cross multiply
    69,728x = 106,224 × 106,224
  4. Step 4: Simplify right side
    69,728x = 11,283,538,176
  5. Step 5: Solve for x
    x = 11,283,538,176/69,728
  6. Step 6: Final answer
    x = 161,822.20

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.