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Finding the Fourth Proportional to 9.32, 12.96 and 9.24

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Solution

The fourth proportional to 9.32, 12.96 and 9.24 is: 12.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.32 : 12.96 = 9.24 : x
  2. Step 2: Convert to fraction form
    9.32/12.96 = 9.24/x
  3. Step 3: Cross multiply
    9.32x = 12.96 × 9.24
  4. Step 4: Simplify right side
    9.32x = 119.75
  5. Step 5: Solve for x
    x = 119.75/9.32
  6. Step 6: Final answer
    x = 12.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.