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Finding the Fourth Proportional to 92.24, 138.37 and 46.59

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Solution

The fourth proportional to 92.24, 138.37 and 46.59 is: 69.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.24 : 138.37 = 46.59 : x
  2. Step 2: Convert to fraction form
    92.24/138.37 = 46.59/x
  3. Step 3: Cross multiply
    92.24x = 138.37 × 46.59
  4. Step 4: Simplify right side
    92.24x = 6,446.66
  5. Step 5: Solve for x
    x = 6,446.66/92.24
  6. Step 6: Final answer
    x = 69.89

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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.