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Finding the Fourth Proportional to 103,819.20, 155,671.20 and 44,644.80

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Solution

The fourth proportional to 103,819.20, 155,671.20 and 44,644.80 is: 66,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,819.20 : 155,671.20 = 44,644.80 : x
  2. Step 2: Convert to fraction form
    103,819.20/155,671.20 = 44,644.80/x
  3. Step 3: Cross multiply
    103,819.20x = 155,671.20 × 44,644.80
  4. Step 4: Simplify right side
    103,819.20x = 6,949,909,589.76
  5. Step 5: Solve for x
    x = 6,949,909,589.76/103,819.20
  6. Step 6: Final answer
    x = 66,942.43

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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.