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Finding the Fourth Proportional to 293,940.56, 440,830.74 and 80,657.90

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Solution

The fourth proportional to 293,940.56, 440,830.74 and 80,657.90 is: 120,964.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,940.56 : 440,830.74 = 80,657.90 : x
  2. Step 2: Convert to fraction form
    293,940.56/440,830.74 = 80,657.90/x
  3. Step 3: Cross multiply
    293,940.56x = 440,830.74 × 80,657.90
  4. Step 4: Simplify right side
    293,940.56x = 35,556,479,539.69
  5. Step 5: Solve for x
    x = 35,556,479,539.69/293,940.56
  6. Step 6: Final answer
    x = 120,964.86

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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.