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Finding the Fourth Proportional to 222.65, 333.95 and 92.59

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Solution

The fourth proportional to 222.65, 333.95 and 92.59 is: 138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.65 : 333.95 = 92.59 : x
  2. Step 2: Convert to fraction form
    222.65/333.95 = 92.59/x
  3. Step 3: Cross multiply
    222.65x = 333.95 × 92.59
  4. Step 4: Simplify right side
    222.65x = 30,918.30
  5. Step 5: Solve for x
    x = 30,918.30/222.65
  6. Step 6: Final answer
    x = 138.87

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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.