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Finding the Fourth Proportional to 608,550.81, 839,517.33 and 393,760.07

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Solution

The fourth proportional to 608,550.81, 839,517.33 and 393,760.07 is: 543,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,550.81 : 839,517.33 = 393,760.07 : x
  2. Step 2: Convert to fraction form
    608,550.81/839,517.33 = 393,760.07/x
  3. Step 3: Cross multiply
    608,550.81x = 839,517.33 × 393,760.07
  4. Step 4: Simplify right side
    608,550.81x = 330,568,398,429.43
  5. Step 5: Solve for x
    x = 330,568,398,429.43/608,550.81
  6. Step 6: Final answer
    x = 543,205.91

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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.