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Finding the Fourth Proportional to 373,504.79, 515,438.24 and 203,742.56

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Solution

The fourth proportional to 373,504.79, 515,438.24 and 203,742.56 is: 281,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,504.79 : 515,438.24 = 203,742.56 : x
  2. Step 2: Convert to fraction form
    373,504.79/515,438.24 = 203,742.56/x
  3. Step 3: Cross multiply
    373,504.79x = 515,438.24 × 203,742.56
  4. Step 4: Simplify right side
    373,504.79x = 105,016,703,910.04
  5. Step 5: Solve for x
    x = 105,016,703,910.04/373,504.79
  6. Step 6: Final answer
    x = 281,165.62

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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.