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Finding the Fourth Proportional to 627,719.39, 866,234.49 and 355,812.29

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Solution

The fourth proportional to 627,719.39, 866,234.49 and 355,812.29 is: 491,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,719.39 : 866,234.49 = 355,812.29 : x
  2. Step 2: Convert to fraction form
    627,719.39/866,234.49 = 355,812.29/x
  3. Step 3: Cross multiply
    627,719.39x = 866,234.49 × 355,812.29
  4. Step 4: Simplify right side
    627,719.39x = 308,216,877,563.88
  5. Step 5: Solve for x
    x = 308,216,877,563.88/627,719.39
  6. Step 6: Final answer
    x = 491,010.61

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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.