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Finding the Fourth Proportional to 627,705.45, 866,223.32 and 341,232.75

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Solution

The fourth proportional to 627,705.45, 866,223.32 and 341,232.75 is: 470,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,705.45 : 866,223.32 = 341,232.75 : x
  2. Step 2: Convert to fraction form
    627,705.45/866,223.32 = 341,232.75/x
  3. Step 3: Cross multiply
    627,705.45x = 866,223.32 × 341,232.75
  4. Step 4: Simplify right side
    627,705.45x = 295,583,763,891.57
  5. Step 5: Solve for x
    x = 295,583,763,891.57/627,705.45
  6. Step 6: Final answer
    x = 470,895.65

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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.