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Finding the Fourth Proportional to 627,935.61, 866,524.78 and 356,021.80

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Solution

The fourth proportional to 627,935.61, 866,524.78 and 356,021.80 is: 491,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,935.61 : 866,524.78 = 356,021.80 : x
  2. Step 2: Convert to fraction form
    627,935.61/866,524.78 = 356,021.80/x
  3. Step 3: Cross multiply
    627,935.61x = 866,524.78 × 356,021.80
  4. Step 4: Simplify right side
    627,935.61x = 308,501,708,863.84
  5. Step 5: Solve for x
    x = 308,501,708,863.84/627,935.61
  6. Step 6: Final answer
    x = 491,295.13

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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.