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Finding the Fourth Proportional to 321,878.11, 443,883.23 and 192,795.97

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Solution

The fourth proportional to 321,878.11, 443,883.23 and 192,795.97 is: 265,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,878.11 : 443,883.23 = 192,795.97 : x
  2. Step 2: Convert to fraction form
    321,878.11/443,883.23 = 192,795.97/x
  3. Step 3: Cross multiply
    321,878.11x = 443,883.23 × 192,795.97
  4. Step 4: Simplify right side
    321,878.11x = 85,578,896,930.60
  5. Step 5: Solve for x
    x = 85,578,896,930.60/321,878.11
  6. Step 6: Final answer
    x = 265,873.62

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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.