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Finding the Fourth Proportional to 396,017.70, 546,515.17 and 223,961.39

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Solution

The fourth proportional to 396,017.70, 546,515.17 and 223,961.39 is: 309,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,017.70 : 546,515.17 = 223,961.39 : x
  2. Step 2: Convert to fraction form
    396,017.70/546,515.17 = 223,961.39/x
  3. Step 3: Cross multiply
    396,017.70x = 546,515.17 × 223,961.39
  4. Step 4: Simplify right side
    396,017.70x = 122,398,298,635.55
  5. Step 5: Solve for x
    x = 122,398,298,635.55/396,017.70
  6. Step 6: Final answer
    x = 309,072.80

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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.