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Finding the Fourth Proportional to 168,978.20, 253,467.30 and 44,331.80

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Solution

The fourth proportional to 168,978.20, 253,467.30 and 44,331.80 is: 66,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,978.20 : 253,467.30 = 44,331.80 : x
  2. Step 2: Convert to fraction form
    168,978.20/253,467.30 = 44,331.80/x
  3. Step 3: Cross multiply
    168,978.20x = 253,467.30 × 44,331.80
  4. Step 4: Simplify right side
    168,978.20x = 11,236,661,650.14
  5. Step 5: Solve for x
    x = 11,236,661,650.14/168,978.20
  6. Step 6: Final answer
    x = 66,497.70

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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.