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Finding the Fourth Proportional to 394,328.80, 591,397.20 and 113,816.80

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Solution

The fourth proportional to 394,328.80, 591,397.20 and 113,816.80 is: 170,697.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,328.80 : 591,397.20 = 113,816.80 : x
  2. Step 2: Convert to fraction form
    394,328.80/591,397.20 = 113,816.80/x
  3. Step 3: Cross multiply
    394,328.80x = 591,397.20 × 113,816.80
  4. Step 4: Simplify right side
    394,328.80x = 67,310,936,832.96
  5. Step 5: Solve for x
    x = 67,310,936,832.96/394,328.80
  6. Step 6: Final answer
    x = 170,697.49

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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.