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Finding the Fourth Proportional to 66,446.34, 91,694.34 and 38,151.42

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Solution

The fourth proportional to 66,446.34, 91,694.34 and 38,151.42 is: 52,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446.34 : 91,694.34 = 38,151.42 : x
  2. Step 2: Convert to fraction form
    66,446.34/91,694.34 = 38,151.42/x
  3. Step 3: Cross multiply
    66,446.34x = 91,694.34 × 38,151.42
  4. Step 4: Simplify right side
    66,446.34x = 3,498,269,276.96
  5. Step 5: Solve for x
    x = 3,498,269,276.96/66,446.34
  6. Step 6: Final answer
    x = 52,648.04

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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.