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Finding the Fourth Proportional to 548,568.46, 756,719.73 and 319,099.92

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Solution

The fourth proportional to 548,568.46, 756,719.73 and 319,099.92 is: 440,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,568.46 : 756,719.73 = 319,099.92 : x
  2. Step 2: Convert to fraction form
    548,568.46/756,719.73 = 319,099.92/x
  3. Step 3: Cross multiply
    548,568.46x = 756,719.73 × 319,099.92
  4. Step 4: Simplify right side
    548,568.46x = 241,469,205,305.42
  5. Step 5: Solve for x
    x = 241,469,205,305.42/548,568.46
  6. Step 6: Final answer
    x = 440,180.62

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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.