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Finding the Fourth Proportional to 9.92, 14.86 and 4.83

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Solution

The fourth proportional to 9.92, 14.86 and 4.83 is: 7.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.92 : 14.86 = 4.83 : x
  2. Step 2: Convert to fraction form
    9.92/14.86 = 4.83/x
  3. Step 3: Cross multiply
    9.92x = 14.86 × 4.83
  4. Step 4: Simplify right side
    9.92x = 71.82
  5. Step 5: Solve for x
    x = 71.82/9.92
  6. Step 6: Final answer
    x = 7.24

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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.