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Finding the Third Proportional to 141 and 153.38

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Solution

The third proportional to 141 and 153.38 is: 166.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    141 : 153.38 = 153.38 : x
  2. Step 2: Convert to fraction form
    141/153.38 = 153.38/x
  3. Step 3: Cross multiply
    141x = 153.38 × 153.38
  4. Step 4: Simplify right side
    141x = 23,523.89
  5. Step 5: Solve for x
    x = 23,523.89/141
  6. Step 6: Final answer
    x = 166.84

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.