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Finding the Fourth Proportional to 619,138.21, 853,253.79 and 482,956.42

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Solution

The fourth proportional to 619,138.21, 853,253.79 and 482,956.42 is: 665,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,138.21 : 853,253.79 = 482,956.42 : x
  2. Step 2: Convert to fraction form
    619,138.21/853,253.79 = 482,956.42/x
  3. Step 3: Cross multiply
    619,138.21x = 853,253.79 × 482,956.42
  4. Step 4: Simplify right side
    619,138.21x = 412,084,395,769.83
  5. Step 5: Solve for x
    x = 412,084,395,769.83/619,138.21
  6. Step 6: Final answer
    x = 665,577.39

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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.