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Finding the Fourth Proportional to 398,358.45, 597,724.23 and 198,694.23

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Solution

The fourth proportional to 398,358.45, 597,724.23 and 198,694.23 is: 298,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,358.45 : 597,724.23 = 198,694.23 : x
  2. Step 2: Convert to fraction form
    398,358.45/597,724.23 = 198,694.23/x
  3. Step 3: Cross multiply
    398,358.45x = 597,724.23 × 198,694.23
  4. Step 4: Simplify right side
    398,358.45x = 118,764,355,632.19
  5. Step 5: Solve for x
    x = 118,764,355,632.19/398,358.45
  6. Step 6: Final answer
    x = 298,134.40

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1.5x scale

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.