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Finding the Fourth Proportional to 103,640.60, 155,493.71 and 37,079.25

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Solution

The fourth proportional to 103,640.60, 155,493.71 and 37,079.25 is: 55,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.60 : 155,493.71 = 37,079.25 : x
  2. Step 2: Convert to fraction form
    103,640.60/155,493.71 = 37,079.25/x
  3. Step 3: Cross multiply
    103,640.60x = 155,493.71 × 37,079.25
  4. Step 4: Simplify right side
    103,640.60x = 5,765,589,961.12
  5. Step 5: Solve for x
    x = 5,765,589,961.12/103,640.60
  6. Step 6: Final answer
    x = 55,630.61

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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.