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Finding the Fourth Proportional to 75.92, 104.74 and 46.42

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Solution

The fourth proportional to 75.92, 104.74 and 46.42 is: 64.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.92 : 104.74 = 46.42 : x
  2. Step 2: Convert to fraction form
    75.92/104.74 = 46.42/x
  3. Step 3: Cross multiply
    75.92x = 104.74 × 46.42
  4. Step 4: Simplify right side
    75.92x = 4,862.03
  5. Step 5: Solve for x
    x = 4,862.03/75.92
  6. Step 6: Final answer
    x = 64.04

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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.