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Finding the Fourth Proportional to 396,048.80, 594,073.20 and 228,087.20

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Solution

The fourth proportional to 396,048.80, 594,073.20 and 228,087.20 is: 342,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,048.80 : 594,073.20 = 228,087.20 : x
  2. Step 2: Convert to fraction form
    396,048.80/594,073.20 = 228,087.20/x
  3. Step 3: Cross multiply
    396,048.80x = 594,073.20 × 228,087.20
  4. Step 4: Simplify right side
    396,048.80x = 135,500,492,783.04
  5. Step 5: Solve for x
    x = 135,500,492,783.04/396,048.80
  6. Step 6: Final answer
    x = 342,130.80

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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.