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Finding the Fourth Proportional to 396,059.72, 594,026.78 and 126,152.84

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Solution

The fourth proportional to 396,059.72, 594,026.78 and 126,152.84 is: 189,209.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,059.72 : 594,026.78 = 126,152.84 : x
  2. Step 2: Convert to fraction form
    396,059.72/594,026.78 = 126,152.84/x
  3. Step 3: Cross multiply
    396,059.72x = 594,026.78 × 126,152.84
  4. Step 4: Simplify right side
    396,059.72x = 74,938,165,333.06
  5. Step 5: Solve for x
    x = 74,938,165,333.06/396,059.72
  6. Step 6: Final answer
    x = 189,209.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.