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Finding the Fourth Proportional to 49.76, 74.56 and 26.92

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Solution

The fourth proportional to 49.76, 74.56 and 26.92 is: 40.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.76 : 74.56 = 26.92 : x
  2. Step 2: Convert to fraction form
    49.76/74.56 = 26.92/x
  3. Step 3: Cross multiply
    49.76x = 74.56 × 26.92
  4. Step 4: Simplify right side
    49.76x = 2,007.16
  5. Step 5: Solve for x
    x = 2,007.16/49.76
  6. Step 6: Final answer
    x = 40.34

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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.