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Finding the Fourth Proportional to 19.59, 27.06 and 14.94

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Solution

The fourth proportional to 19.59, 27.06 and 14.94 is: 20.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.59 : 27.06 = 14.94 : x
  2. Step 2: Convert to fraction form
    19.59/27.06 = 14.94/x
  3. Step 3: Cross multiply
    19.59x = 27.06 × 14.94
  4. Step 4: Simplify right side
    19.59x = 404.28
  5. Step 5: Solve for x
    x = 404.28/19.59
  6. Step 6: Final answer
    x = 20.64

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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.