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Finding the Fourth Proportional to 266.70, 368 and 167.16

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Solution

The fourth proportional to 266.70, 368 and 167.16 is: 230.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.70 : 368 = 167.16 : x
  2. Step 2: Convert to fraction form
    266.70/368 = 167.16/x
  3. Step 3: Cross multiply
    266.70x = 368 × 167.16
  4. Step 4: Simplify right side
    266.70x = 61,514.88
  5. Step 5: Solve for x
    x = 61,514.88/266.70
  6. Step 6: Final answer
    x = 230.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.