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Finding the Fourth Proportional to 12.02, 18 and 10.67

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Solution

The fourth proportional to 12.02, 18 and 10.67 is: 15.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.02 : 18 = 10.67 : x
  2. Step 2: Convert to fraction form
    12.02/18 = 10.67/x
  3. Step 3: Cross multiply
    12.02x = 18 × 10.67
  4. Step 4: Simplify right side
    12.02x = 192.06
  5. Step 5: Solve for x
    x = 192.06/12.02
  6. Step 6: Final answer
    x = 15.98

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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.