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Finding the Fourth Proportional to 441,228.57, 661,755.70 and 121,297.88

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Solution

The fourth proportional to 441,228.57, 661,755.70 and 121,297.88 is: 181,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,228.57 : 661,755.70 = 121,297.88 : x
  2. Step 2: Convert to fraction form
    441,228.57/661,755.70 = 121,297.88/x
  3. Step 3: Cross multiply
    441,228.57x = 661,755.70 × 121,297.88
  4. Step 4: Simplify right side
    441,228.57x = 80,269,563,487.92
  5. Step 5: Solve for x
    x = 80,269,563,487.92/441,228.57
  6. Step 6: Final answer
    x = 181,922.86

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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.