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Finding the Fourth Proportional to 324,056.12, 485,620.82 and 237,991.90

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Solution

The fourth proportional to 324,056.12, 485,620.82 and 237,991.90 is: 356,647.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,056.12 : 485,620.82 = 237,991.90 : x
  2. Step 2: Convert to fraction form
    324,056.12/485,620.82 = 237,991.90/x
  3. Step 3: Cross multiply
    324,056.12x = 485,620.82 × 237,991.90
  4. Step 4: Simplify right side
    324,056.12x = 115,573,821,631.36
  5. Step 5: Solve for x
    x = 115,573,821,631.36/324,056.12
  6. Step 6: Final answer
    x = 356,647.55

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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.