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Finding the Fourth Proportional to 519,760.20, 779,640.30 and 360,327.90

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Solution

The fourth proportional to 519,760.20, 779,640.30 and 360,327.90 is: 540,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,760.20 : 779,640.30 = 360,327.90 : x
  2. Step 2: Convert to fraction form
    519,760.20/779,640.30 = 360,327.90/x
  3. Step 3: Cross multiply
    519,760.20x = 779,640.30 × 360,327.90
  4. Step 4: Simplify right side
    519,760.20x = 280,926,152,054.37
  5. Step 5: Solve for x
    x = 280,926,152,054.37/519,760.20
  6. Step 6: Final answer
    x = 540,491.85

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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.