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Finding the Fourth Proportional to 16.60, 24.94 and 15.74

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Solution

The fourth proportional to 16.60, 24.94 and 15.74 is: 23.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.60 : 24.94 = 15.74 : x
  2. Step 2: Convert to fraction form
    16.60/24.94 = 15.74/x
  3. Step 3: Cross multiply
    16.60x = 24.94 × 15.74
  4. Step 4: Simplify right side
    16.60x = 392.56
  5. Step 5: Solve for x
    x = 392.56/16.60
  6. Step 6: Final answer
    x = 23.65

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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.