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Finding the Fourth Proportional to 264,986.31, 396,560.88 and 253,963.83

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Solution

The fourth proportional to 264,986.31, 396,560.88 and 253,963.83 is: 380,065.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,986.31 : 396,560.88 = 253,963.83 : x
  2. Step 2: Convert to fraction form
    264,986.31/396,560.88 = 253,963.83/x
  3. Step 3: Cross multiply
    264,986.31x = 396,560.88 × 253,963.83
  4. Step 4: Simplify right side
    264,986.31x = 100,712,119,912.97
  5. Step 5: Solve for x
    x = 100,712,119,912.97/264,986.31
  6. Step 6: Final answer
    x = 380,065.37

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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.