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Finding the Third Proportional to 97.45 and 147.13

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Solution

The third proportional to 97.45 and 147.13 is: 222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.45 : 147.13 = 147.13 : x
  2. Step 2: Convert to fraction form
    97.45/147.13 = 147.13/x
  3. Step 3: Cross multiply
    97.45x = 147.13 × 147.13
  4. Step 4: Simplify right side
    97.45x = 21,646.92
  5. Step 5: Solve for x
    x = 21,646.92/97.45
  6. Step 6: Final answer
    x = 222.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.