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Finding the Third Proportional to 165.16 and 247.43

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Solution

The third proportional to 165.16 and 247.43 is: 370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.16 : 247.43 = 247.43 : x
  2. Step 2: Convert to fraction form
    165.16/247.43 = 247.43/x
  3. Step 3: Cross multiply
    165.16x = 247.43 × 247.43
  4. Step 4: Simplify right side
    165.16x = 61,221.45
  5. Step 5: Solve for x
    x = 61,221.45/165.16
  6. Step 6: Final answer
    x = 370.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.