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Finding the Fourth Proportional to 259,563.52, 389,360.67 and 72,575.02

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Solution

The fourth proportional to 259,563.52, 389,360.67 and 72,575.02 is: 108,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,563.52 : 389,360.67 = 72,575.02 : x
  2. Step 2: Convert to fraction form
    259,563.52/389,360.67 = 72,575.02/x
  3. Step 3: Cross multiply
    259,563.52x = 389,360.67 × 72,575.02
  4. Step 4: Simplify right side
    259,563.52x = 28,257,858,412.46
  5. Step 5: Solve for x
    x = 28,257,858,412.46/259,563.52
  6. Step 6: Final answer
    x = 108,866.83

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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.