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Finding the Fourth Proportional to 394,999.20, 590,770.80 and 353,181.60

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Solution

The fourth proportional to 394,999.20, 590,770.80 and 353,181.60 is: 528,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,999.20 : 590,770.80 = 353,181.60 : x
  2. Step 2: Convert to fraction form
    394,999.20/590,770.80 = 353,181.60/x
  3. Step 3: Cross multiply
    394,999.20x = 590,770.80 × 353,181.60
  4. Step 4: Simplify right side
    394,999.20x = 208,649,376,377.28
  5. Step 5: Solve for x
    x = 208,649,376,377.28/394,999.20
  6. Step 6: Final answer
    x = 528,227.34

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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.