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Finding the Third Proportional to 164 and 263

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Solution

The third proportional to 164 and 263 is: 421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    164 : 263 = 263 : x
  2. Step 2: Convert to fraction form
    164/263 = 263/x
  3. Step 3: Cross multiply
    164x = 263 × 263
  4. Step 4: Simplify right side
    164x = 69,169
  5. Step 5: Solve for x
    x = 69,169/164
  6. Step 6: Final answer
    x = 421.76

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.