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Finding the Fourth Proportional to 396,716.79, 547,475.70 and 224,630.22

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Solution

The fourth proportional to 396,716.79, 547,475.70 and 224,630.22 is: 309,993.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,716.79 : 547,475.70 = 224,630.22 : x
  2. Step 2: Convert to fraction form
    396,716.79/547,475.70 = 224,630.22/x
  3. Step 3: Cross multiply
    396,716.79x = 547,475.70 × 224,630.22
  4. Step 4: Simplify right side
    396,716.79x = 122,979,583,824.77
  5. Step 5: Solve for x
    x = 122,979,583,824.77/396,716.79
  6. Step 6: Final answer
    x = 309,993.39

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1.5x scale

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.