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Finding the Fourth Proportional to 276,665.20, 415,192.20 and 177,067.60

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Solution

The fourth proportional to 276,665.20, 415,192.20 and 177,067.60 is: 265,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,665.20 : 415,192.20 = 177,067.60 : x
  2. Step 2: Convert to fraction form
    276,665.20/415,192.20 = 177,067.60/x
  3. Step 3: Cross multiply
    276,665.20x = 415,192.20 × 177,067.60
  4. Step 4: Simplify right side
    276,665.20x = 73,517,086,392.72
  5. Step 5: Solve for x
    x = 73,517,086,392.72/276,665.20
  6. Step 6: Final answer
    x = 265,725.82

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1.5x scale

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.