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Finding the Fourth Proportional to 539,431.80, 809,147.70 and 184,414.20

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Solution

The fourth proportional to 539,431.80, 809,147.70 and 184,414.20 is: 276,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,431.80 : 809,147.70 = 184,414.20 : x
  2. Step 2: Convert to fraction form
    539,431.80/809,147.70 = 184,414.20/x
  3. Step 3: Cross multiply
    539,431.80x = 809,147.70 × 184,414.20
  4. Step 4: Simplify right side
    539,431.80x = 149,218,325,777.34
  5. Step 5: Solve for x
    x = 149,218,325,777.34/539,431.80
  6. Step 6: Final answer
    x = 276,621.30

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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.