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Finding the Fourth Proportional to 260,783.64, 391,175.52 and 167,879.88

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Solution

The fourth proportional to 260,783.64, 391,175.52 and 167,879.88 is: 251,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,783.64 : 391,175.52 = 167,879.88 : x
  2. Step 2: Convert to fraction form
    260,783.64/391,175.52 = 167,879.88/x
  3. Step 3: Cross multiply
    260,783.64x = 391,175.52 × 167,879.88
  4. Step 4: Simplify right side
    260,783.64x = 65,670,499,356.54
  5. Step 5: Solve for x
    x = 65,670,499,356.54/260,783.64
  6. Step 6: Final answer
    x = 251,819.86

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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.