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Finding the Fourth Proportional to 543,314.80, 814,316.10 and 276,938.20

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Solution

The fourth proportional to 543,314.80, 814,316.10 and 276,938.20 is: 415,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,314.80 : 814,316.10 = 276,938.20 : x
  2. Step 2: Convert to fraction form
    543,314.80/814,316.10 = 276,938.20/x
  3. Step 3: Cross multiply
    543,314.80x = 814,316.10 × 276,938.20
  4. Step 4: Simplify right side
    543,314.80x = 225,515,234,965.02
  5. Step 5: Solve for x
    x = 225,515,234,965.02/543,314.80
  6. Step 6: Final answer
    x = 415,072.87

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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.