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Finding the Fourth Proportional to 627,694.75, 866,200.50 and 355,787.67

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Solution

The fourth proportional to 627,694.75, 866,200.50 and 355,787.67 is: 490,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,694.75 : 866,200.50 = 355,787.67 : x
  2. Step 2: Convert to fraction form
    627,694.75/866,200.50 = 355,787.67/x
  3. Step 3: Cross multiply
    627,694.75x = 866,200.50 × 355,787.67
  4. Step 4: Simplify right side
    627,694.75x = 308,183,453,316.83
  5. Step 5: Solve for x
    x = 308,183,453,316.83/627,694.75
  6. Step 6: Final answer
    x = 490,976.63

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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.