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Finding the Fourth Proportional to 392,495.76, 541,502.42 and 222,631.48

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Solution

The fourth proportional to 392,495.76, 541,502.42 and 222,631.48 is: 307,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,495.76 : 541,502.42 = 222,631.48 : x
  2. Step 2: Convert to fraction form
    392,495.76/541,502.42 = 222,631.48/x
  3. Step 3: Cross multiply
    392,495.76x = 541,502.42 × 222,631.48
  4. Step 4: Simplify right side
    392,495.76x = 120,555,485,188.18
  5. Step 5: Solve for x
    x = 120,555,485,188.18/392,495.76
  6. Step 6: Final answer
    x = 307,151.05

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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.