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Finding the Fourth Proportional to 372,640.80, 558,910.80 and 148,166.40

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Solution

The fourth proportional to 372,640.80, 558,910.80 and 148,166.40 is: 222,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,640.80 : 558,910.80 = 148,166.40 : x
  2. Step 2: Convert to fraction form
    372,640.80/558,910.80 = 148,166.40/x
  3. Step 3: Cross multiply
    372,640.80x = 558,910.80 × 148,166.40
  4. Step 4: Simplify right side
    372,640.80x = 82,811,801,157.12
  5. Step 5: Solve for x
    x = 82,811,801,157.12/372,640.80
  6. Step 6: Final answer
    x = 222,229.56

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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.