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Finding the Fourth Proportional to 512,360.80, 768,541.20 and 179,936.80

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Solution

The fourth proportional to 512,360.80, 768,541.20 and 179,936.80 is: 269,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,360.80 : 768,541.20 = 179,936.80 : x
  2. Step 2: Convert to fraction form
    512,360.80/768,541.20 = 179,936.80/x
  3. Step 3: Cross multiply
    512,360.80x = 768,541.20 × 179,936.80
  4. Step 4: Simplify right side
    512,360.80x = 138,288,844,196.16
  5. Step 5: Solve for x
    x = 138,288,844,196.16/512,360.80
  6. Step 6: Final answer
    x = 269,905.20

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Similar ratio
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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.