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Finding the Fourth Proportional to 9.92, 14.76 and 9.56

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Solution

The fourth proportional to 9.92, 14.76 and 9.56 is: 14.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.92 : 14.76 = 9.56 : x
  2. Step 2: Convert to fraction form
    9.92/14.76 = 9.56/x
  3. Step 3: Cross multiply
    9.92x = 14.76 × 9.56
  4. Step 4: Simplify right side
    9.92x = 140.98
  5. Step 5: Solve for x
    x = 140.98/9.92
  6. Step 6: Final answer
    x = 14.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.