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Finding the Fourth Proportional to 9.68, 14.49 and 9.56

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Solution

The fourth proportional to 9.68, 14.49 and 9.56 is: 14.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.68 : 14.49 = 9.56 : x
  2. Step 2: Convert to fraction form
    9.68/14.49 = 9.56/x
  3. Step 3: Cross multiply
    9.68x = 14.49 × 9.56
  4. Step 4: Simplify right side
    9.68x = 138.45
  5. Step 5: Solve for x
    x = 138.45/9.68
  6. Step 6: Final answer
    x = 14.31

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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.