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Finding the Fourth Proportional to 263,691.75, 395,378.15 and 103,576.01

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Solution

The fourth proportional to 263,691.75, 395,378.15 and 103,576.01 is: 155,301.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,691.75 : 395,378.15 = 103,576.01 : x
  2. Step 2: Convert to fraction form
    263,691.75/395,378.15 = 103,576.01/x
  3. Step 3: Cross multiply
    263,691.75x = 395,378.15 × 103,576.01
  4. Step 4: Simplify right side
    263,691.75x = 40,951,691,218.18
  5. Step 5: Solve for x
    x = 40,951,691,218.18/263,691.75
  6. Step 6: Final answer
    x = 155,301.37

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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.