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Finding the Fourth Proportional to 323,183.80, 445,989.42 and 187,236.28

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Solution

The fourth proportional to 323,183.80, 445,989.42 and 187,236.28 is: 258,383.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,183.80 : 445,989.42 = 187,236.28 : x
  2. Step 2: Convert to fraction form
    323,183.80/445,989.42 = 187,236.28/x
  3. Step 3: Cross multiply
    323,183.80x = 445,989.42 × 187,236.28
  4. Step 4: Simplify right side
    323,183.80x = 83,505,399,920.16
  5. Step 5: Solve for x
    x = 83,505,399,920.16/323,183.80
  6. Step 6: Final answer
    x = 258,383.62

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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.