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Finding the Fourth Proportional to 240,991.28, 361,236.24 and 80,948.45

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Solution

The fourth proportional to 240,991.28, 361,236.24 and 80,948.45 is: 121,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,991.28 : 361,236.24 = 80,948.45 : x
  2. Step 2: Convert to fraction form
    240,991.28/361,236.24 = 80,948.45/x
  3. Step 3: Cross multiply
    240,991.28x = 361,236.24 × 80,948.45
  4. Step 4: Simplify right side
    240,991.28x = 29,241,511,905.65
  5. Step 5: Solve for x
    x = 29,241,511,905.65/240,991.28
  6. Step 6: Final answer
    x = 121,338.47

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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.