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Finding the Fourth Proportional to 101,761.50, 140,408.41 and 58,731.86

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Solution

The fourth proportional to 101,761.50, 140,408.41 and 58,731.86 is: 81,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,761.50 : 140,408.41 = 58,731.86 : x
  2. Step 2: Convert to fraction form
    101,761.50/140,408.41 = 58,731.86/x
  3. Step 3: Cross multiply
    101,761.50x = 140,408.41 × 58,731.86
  4. Step 4: Simplify right side
    101,761.50x = 8,246,447,163.54
  5. Step 5: Solve for x
    x = 8,246,447,163.54/101,761.50
  6. Step 6: Final answer
    x = 81,037.00

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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.