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Finding the Fourth Proportional to 26.48, 36.55 and 17.76

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Solution

The fourth proportional to 26.48, 36.55 and 17.76 is: 24.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.48 : 36.55 = 17.76 : x
  2. Step 2: Convert to fraction form
    26.48/36.55 = 17.76/x
  3. Step 3: Cross multiply
    26.48x = 36.55 × 17.76
  4. Step 4: Simplify right side
    26.48x = 648.94
  5. Step 5: Solve for x
    x = 648.94/26.48
  6. Step 6: Final answer
    x = 24.50

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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.