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Finding the Fourth Proportional to 539,420.80, 809,131.20 and 184,381.60

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Solution

The fourth proportional to 539,420.80, 809,131.20 and 184,381.60 is: 276,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,420.80 : 809,131.20 = 184,381.60 : x
  2. Step 2: Convert to fraction form
    539,420.80/809,131.20 = 184,381.60/x
  3. Step 3: Cross multiply
    539,420.80x = 809,131.20 × 184,381.60
  4. Step 4: Simplify right side
    539,420.80x = 149,188,905,265.92
  5. Step 5: Solve for x
    x = 149,188,905,265.92/539,420.80
  6. Step 6: Final answer
    x = 276,572.40

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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.