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Finding the Fourth Proportional to 29.95, 44.92 and 11.91

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Solution

The fourth proportional to 29.95, 44.92 and 11.91 is: 17.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.95 : 44.92 = 11.91 : x
  2. Step 2: Convert to fraction form
    29.95/44.92 = 11.91/x
  3. Step 3: Cross multiply
    29.95x = 44.92 × 11.91
  4. Step 4: Simplify right side
    29.95x = 534.81
  5. Step 5: Solve for x
    x = 534.81/29.95
  6. Step 6: Final answer
    x = 17.86

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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.