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Finding the Fourth Proportional to 396,879.54, 595,401.35 and 130,656.03

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Solution

The fourth proportional to 396,879.54, 595,401.35 and 130,656.03 is: 196,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,879.54 : 595,401.35 = 130,656.03 : x
  2. Step 2: Convert to fraction form
    396,879.54/595,401.35 = 130,656.03/x
  3. Step 3: Cross multiply
    396,879.54x = 595,401.35 × 130,656.03
  4. Step 4: Simplify right side
    396,879.54x = 77,792,775,994.36
  5. Step 5: Solve for x
    x = 77,792,775,994.36/396,879.54
  6. Step 6: Final answer
    x = 196,011.05

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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.