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Finding the Fourth Proportional to 543,194.20, 814,791.30 and 342,427.60

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Solution

The fourth proportional to 543,194.20, 814,791.30 and 342,427.60 is: 513,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,194.20 : 814,791.30 = 342,427.60 : x
  2. Step 2: Convert to fraction form
    543,194.20/814,791.30 = 342,427.60/x
  3. Step 3: Cross multiply
    543,194.20x = 814,791.30 × 342,427.60
  4. Step 4: Simplify right side
    543,194.20x = 279,007,029,359.88
  5. Step 5: Solve for x
    x = 279,007,029,359.88/543,194.20
  6. Step 6: Final answer
    x = 513,641.40

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Double scale
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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.