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Finding the Fourth Proportional to 494,396.73, 741,529.44 and 139,439.34

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Solution

The fourth proportional to 494,396.73, 741,529.44 and 139,439.34 is: 209,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,396.73 : 741,529.44 = 139,439.34 : x
  2. Step 2: Convert to fraction form
    494,396.73/741,529.44 = 139,439.34/x
  3. Step 3: Cross multiply
    494,396.73x = 741,529.44 × 139,439.34
  4. Step 4: Simplify right side
    494,396.73x = 103,398,375,704.17
  5. Step 5: Solve for x
    x = 103,398,375,704.17/494,396.73
  6. Step 6: Final answer
    x = 209,140.49

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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.