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Finding the Fourth Proportional to 627,964.40, 866,286.18 and 373,135.16

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Solution

The fourth proportional to 627,964.40, 866,286.18 and 373,135.16 is: 514,745.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,964.40 : 866,286.18 = 373,135.16 : x
  2. Step 2: Convert to fraction form
    627,964.40/866,286.18 = 373,135.16/x
  3. Step 3: Cross multiply
    627,964.40x = 866,286.18 × 373,135.16
  4. Step 4: Simplify right side
    627,964.40x = 323,241,832,380.09
  5. Step 5: Solve for x
    x = 323,241,832,380.09/627,964.40
  6. Step 6: Final answer
    x = 514,745.47

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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.