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Finding the Fourth Proportional to 394,787.40, 592,181.10 and 353,453.10

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Solution

The fourth proportional to 394,787.40, 592,181.10 and 353,453.10 is: 530,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,787.40 : 592,181.10 = 353,453.10 : x
  2. Step 2: Convert to fraction form
    394,787.40/592,181.10 = 353,453.10/x
  3. Step 3: Cross multiply
    394,787.40x = 592,181.10 × 353,453.10
  4. Step 4: Simplify right side
    394,787.40x = 209,308,245,556.41
  5. Step 5: Solve for x
    x = 209,308,245,556.41/394,787.40
  6. Step 6: Final answer
    x = 530,179.65

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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.