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Finding the Fourth Proportional to 579,467.70, 869,201.55 and 366,891.30

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Solution

The fourth proportional to 579,467.70, 869,201.55 and 366,891.30 is: 550,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,467.70 : 869,201.55 = 366,891.30 : x
  2. Step 2: Convert to fraction form
    579,467.70/869,201.55 = 366,891.30/x
  3. Step 3: Cross multiply
    579,467.70x = 869,201.55 × 366,891.30
  4. Step 4: Simplify right side
    579,467.70x = 318,902,486,641.52
  5. Step 5: Solve for x
    x = 318,902,486,641.52/579,467.70
  6. Step 6: Final answer
    x = 550,336.95

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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.