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Finding the Fourth Proportional to 548,568.09, 756,719.13 and 319,099.56

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Solution

The fourth proportional to 548,568.09, 756,719.13 and 319,099.56 is: 440,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,568.09 : 756,719.13 = 319,099.56 : x
  2. Step 2: Convert to fraction form
    548,568.09/756,719.13 = 319,099.56/x
  3. Step 3: Cross multiply
    548,568.09x = 756,719.13 × 319,099.56
  4. Step 4: Simplify right side
    548,568.09x = 241,468,741,426.58
  5. Step 5: Solve for x
    x = 241,468,741,426.58/548,568.09
  6. Step 6: Final answer
    x = 440,180.07

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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.