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Finding the Fourth Proportional to 543,311.20, 814,383.60 and 206,221.60

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Solution

The fourth proportional to 543,311.20, 814,383.60 and 206,221.60 is: 309,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,311.20 : 814,383.60 = 206,221.60 : x
  2. Step 2: Convert to fraction form
    543,311.20/814,383.60 = 206,221.60/x
  3. Step 3: Cross multiply
    543,311.20x = 814,383.60 × 206,221.60
  4. Step 4: Simplify right side
    543,311.20x = 167,943,489,005.76
  5. Step 5: Solve for x
    x = 167,943,489,005.76/543,311.20
  6. Step 6: Final answer
    x = 309,111.04

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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.