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Finding the Fourth Proportional to 627,813.92, 866,365.10 and 355,906.95

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Solution

The fourth proportional to 627,813.92, 866,365.10 and 355,906.95 is: 491,141.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,813.92 : 866,365.10 = 355,906.95 : x
  2. Step 2: Convert to fraction form
    627,813.92/866,365.10 = 355,906.95/x
  3. Step 3: Cross multiply
    627,813.92x = 866,365.10 × 355,906.95
  4. Step 4: Simplify right side
    627,813.92x = 308,345,356,633.69
  5. Step 5: Solve for x
    x = 308,345,356,633.69/627,813.92
  6. Step 6: Final answer
    x = 491,141.32

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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.