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Finding the Fourth Proportional to 539,418.20, 809,127.30 and 184,443.80

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Solution

The fourth proportional to 539,418.20, 809,127.30 and 184,443.80 is: 276,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,418.20 : 809,127.30 = 184,443.80 : x
  2. Step 2: Convert to fraction form
    539,418.20/809,127.30 = 184,443.80/x
  3. Step 3: Cross multiply
    539,418.20x = 809,127.30 × 184,443.80
  4. Step 4: Simplify right side
    539,418.20x = 149,238,513,895.74
  5. Step 5: Solve for x
    x = 149,238,513,895.74/539,418.20
  6. Step 6: Final answer
    x = 276,665.70

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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.