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Finding the Fourth Proportional to 396,048.60, 594,072.90 and 115,529.40

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Solution

The fourth proportional to 396,048.60, 594,072.90 and 115,529.40 is: 173,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,048.60 : 594,072.90 = 115,529.40 : x
  2. Step 2: Convert to fraction form
    396,048.60/594,072.90 = 115,529.40/x
  3. Step 3: Cross multiply
    396,048.60x = 594,072.90 × 115,529.40
  4. Step 4: Simplify right side
    396,048.60x = 68,632,885,693.26
  5. Step 5: Solve for x
    x = 68,632,885,693.26/396,048.60
  6. Step 6: Final answer
    x = 173,294.10

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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.