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Finding the Fourth Proportional to 323,857.80, 485,786.70 and 102,241.80

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Solution

The fourth proportional to 323,857.80, 485,786.70 and 102,241.80 is: 153,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,857.80 : 485,786.70 = 102,241.80 : x
  2. Step 2: Convert to fraction form
    323,857.80/485,786.70 = 102,241.80/x
  3. Step 3: Cross multiply
    323,857.80x = 485,786.70 × 102,241.80
  4. Step 4: Simplify right side
    323,857.80x = 49,667,706,624.06
  5. Step 5: Solve for x
    x = 49,667,706,624.06/323,857.80
  6. Step 6: Final answer
    x = 153,362.70

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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.