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Finding the Fourth Proportional to 351,566.20, 485,191.20 and 198,632.44

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Solution

The fourth proportional to 351,566.20, 485,191.20 and 198,632.44 is: 274,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,566.20 : 485,191.20 = 198,632.44 : x
  2. Step 2: Convert to fraction form
    351,566.20/485,191.20 = 198,632.44/x
  3. Step 3: Cross multiply
    351,566.20x = 485,191.20 × 198,632.44
  4. Step 4: Simplify right side
    351,566.20x = 96,374,711,922.53
  5. Step 5: Solve for x
    x = 96,374,711,922.53/351,566.20
  6. Step 6: Final answer
    x = 274,129.63

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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.