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Finding the Third Proportional to 91 and 165.50

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Solution

The third proportional to 91 and 165.50 is: 300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91 : 165.50 = 165.50 : x
  2. Step 2: Convert to fraction form
    91/165.50 = 165.50/x
  3. Step 3: Cross multiply
    91x = 165.50 × 165.50
  4. Step 4: Simplify right side
    91x = 27,390.25
  5. Step 5: Solve for x
    x = 27,390.25/91
  6. Step 6: Final answer
    x = 300.99

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Why These Related Problems?

These problems maintain the same ratio (1.82) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.