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Finding the Fourth Proportional to 19.14, 26.41 and 14.86

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Solution

The fourth proportional to 19.14, 26.41 and 14.86 is: 20.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.14 : 26.41 = 14.86 : x
  2. Step 2: Convert to fraction form
    19.14/26.41 = 14.86/x
  3. Step 3: Cross multiply
    19.14x = 26.41 × 14.86
  4. Step 4: Simplify right side
    19.14x = 392.45
  5. Step 5: Solve for x
    x = 392.45/19.14
  6. Step 6: Final answer
    x = 20.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.