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Finding the Fourth Proportional to 324,690.05, 447,782.15 and 203,842.60

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Solution

The fourth proportional to 324,690.05, 447,782.15 and 203,842.60 is: 281,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,690.05 : 447,782.15 = 203,842.60 : x
  2. Step 2: Convert to fraction form
    324,690.05/447,782.15 = 203,842.60/x
  3. Step 3: Cross multiply
    324,690.05x = 447,782.15 × 203,842.60
  4. Step 4: Simplify right side
    324,690.05x = 91,277,074,431.47
  5. Step 5: Solve for x
    x = 91,277,074,431.47/324,690.05
  6. Step 6: Final answer
    x = 281,120.64

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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.