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Finding the Fourth Proportional to 396,718.05, 547,477.44 and 224,631.48

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Solution

The fourth proportional to 396,718.05, 547,477.44 and 224,631.48 is: 309,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,718.05 : 547,477.44 = 224,631.48 : x
  2. Step 2: Convert to fraction form
    396,718.05/547,477.44 = 224,631.48/x
  3. Step 3: Cross multiply
    396,718.05x = 547,477.44 × 224,631.48
  4. Step 4: Simplify right side
    396,718.05x = 122,980,667,324.36
  5. Step 5: Solve for x
    x = 122,980,667,324.36/396,718.05
  6. Step 6: Final answer
    x = 309,995.14

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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.