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Finding the Fourth Proportional to 32.57, 48.85 and 11.19

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Solution

The fourth proportional to 32.57, 48.85 and 11.19 is: 16.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.57 : 48.85 = 11.19 : x
  2. Step 2: Convert to fraction form
    32.57/48.85 = 11.19/x
  3. Step 3: Cross multiply
    32.57x = 48.85 × 11.19
  4. Step 4: Simplify right side
    32.57x = 546.58
  5. Step 5: Solve for x
    x = 546.58/32.57
  6. Step 6: Final answer
    x = 16.78

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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.