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Finding the Fourth Proportional to 279,843.89, 386,195.00 and 159,005.66

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Solution

The fourth proportional to 279,843.89, 386,195.00 and 159,005.66 is: 219,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,843.89 : 386,195.00 = 159,005.66 : x
  2. Step 2: Convert to fraction form
    279,843.89/386,195.00 = 159,005.66/x
  3. Step 3: Cross multiply
    279,843.89x = 386,195.00 × 159,005.66
  4. Step 4: Simplify right side
    279,843.89x = 61,407,188,137.70
  5. Step 5: Solve for x
    x = 61,407,188,137.70/279,843.89
  6. Step 6: Final answer
    x = 219,433.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.