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Finding the Fourth Proportional to 72,361.28, 108,578.96 and 34,453.46

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Solution

The fourth proportional to 72,361.28, 108,578.96 and 34,453.46 is: 51,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361.28 : 108,578.96 = 34,453.46 : x
  2. Step 2: Convert to fraction form
    72,361.28/108,578.96 = 34,453.46/x
  3. Step 3: Cross multiply
    72,361.28x = 108,578.96 × 34,453.46
  4. Step 4: Simplify right side
    72,361.28x = 3,740,920,855.20
  5. Step 5: Solve for x
    x = 3,740,920,855.20/72,361.28
  6. Step 6: Final answer
    x = 51,697.83

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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.