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Finding the Fourth Proportional to 11.24, 16.88 and 9.35

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Solution

The fourth proportional to 11.24, 16.88 and 9.35 is: 14.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.24 : 16.88 = 9.35 : x
  2. Step 2: Convert to fraction form
    11.24/16.88 = 9.35/x
  3. Step 3: Cross multiply
    11.24x = 16.88 × 9.35
  4. Step 4: Simplify right side
    11.24x = 157.78
  5. Step 5: Solve for x
    x = 157.78/11.24
  6. Step 6: Final answer
    x = 14.04

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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.