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Finding the Fourth Proportional to 627,961.17, 866,560.25 and 356,047.44

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Solution

The fourth proportional to 627,961.17, 866,560.25 and 356,047.44 is: 491,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,961.17 : 866,560.25 = 356,047.44 : x
  2. Step 2: Convert to fraction form
    627,961.17/866,560.25 = 356,047.44/x
  3. Step 3: Cross multiply
    627,961.17x = 866,560.25 × 356,047.44
  4. Step 4: Simplify right side
    627,961.17x = 308,536,556,838.02
  5. Step 5: Solve for x
    x = 308,536,556,838.02/627,961.17
  6. Step 6: Final answer
    x = 491,330.63

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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.