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Finding the Fourth Proportional to 351,956.91, 485,694.18 and 198,992.46

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Solution

The fourth proportional to 351,956.91, 485,694.18 and 198,992.46 is: 274,606.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,956.91 : 485,694.18 = 198,992.46 : x
  2. Step 2: Convert to fraction form
    351,956.91/485,694.18 = 198,992.46/x
  3. Step 3: Cross multiply
    351,956.91x = 485,694.18 × 198,992.46
  4. Step 4: Simplify right side
    351,956.91x = 96,649,479,685.88
  5. Step 5: Solve for x
    x = 96,649,479,685.88/351,956.91
  6. Step 6: Final answer
    x = 274,606.00

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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.