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Finding the Fourth Proportional to 14.92, 22.36 and 7.31

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Solution

The fourth proportional to 14.92, 22.36 and 7.31 is: 10.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.92 : 22.36 = 7.31 : x
  2. Step 2: Convert to fraction form
    14.92/22.36 = 7.31/x
  3. Step 3: Cross multiply
    14.92x = 22.36 × 7.31
  4. Step 4: Simplify right side
    14.92x = 163.36
  5. Step 5: Solve for x
    x = 163.36/14.92
  6. Step 6: Final answer
    x = 10.95

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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.