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Finding the Fourth Proportional to 627,717.39, 866,231.73 and 355,810.29

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Solution

The fourth proportional to 627,717.39, 866,231.73 and 355,810.29 is: 491,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,717.39 : 866,231.73 = 355,810.29 : x
  2. Step 2: Convert to fraction form
    627,717.39/866,231.73 = 355,810.29/x
  3. Step 3: Cross multiply
    627,717.39x = 866,231.73 × 355,810.29
  4. Step 4: Simplify right side
    627,717.39x = 308,214,163,058.50
  5. Step 5: Solve for x
    x = 308,214,163,058.50/627,717.39
  6. Step 6: Final answer
    x = 491,007.85

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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.