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Finding the Fourth Proportional to 398,793.62, 598,190.43 and 162,080.84

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Solution

The fourth proportional to 398,793.62, 598,190.43 and 162,080.84 is: 243,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,793.62 : 598,190.43 = 162,080.84 : x
  2. Step 2: Convert to fraction form
    398,793.62/598,190.43 = 162,080.84/x
  3. Step 3: Cross multiply
    398,793.62x = 598,190.43 × 162,080.84
  4. Step 4: Simplify right side
    398,793.62x = 96,955,207,374.36
  5. Step 5: Solve for x
    x = 96,955,207,374.36/398,793.62
  6. Step 6: Final answer
    x = 243,121.26

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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.