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Finding the Fourth Proportional to 411,907.44, 568,138.74 and 378,025.34

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Solution

The fourth proportional to 411,907.44, 568,138.74 and 378,025.34 is: 521,405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,907.44 : 568,138.74 = 378,025.34 : x
  2. Step 2: Convert to fraction form
    411,907.44/568,138.74 = 378,025.34/x
  3. Step 3: Cross multiply
    411,907.44x = 568,138.74 × 378,025.34
  4. Step 4: Simplify right side
    411,907.44x = 214,770,840,355.67
  5. Step 5: Solve for x
    x = 214,770,840,355.67/411,907.44
  6. Step 6: Final answer
    x = 521,405.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.