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Finding the Fourth Proportional to 627,959.20, 866,557.53 and 356,045.47

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Solution

The fourth proportional to 627,959.20, 866,557.53 and 356,045.47 is: 491,327.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,959.20 : 866,557.53 = 356,045.47 : x
  2. Step 2: Convert to fraction form
    627,959.20/866,557.53 = 356,045.47/x
  3. Step 3: Cross multiply
    627,959.20x = 866,557.53 × 356,045.47
  4. Step 4: Simplify right side
    627,959.20x = 308,533,879,549.33
  5. Step 5: Solve for x
    x = 308,533,879,549.33/627,959.20
  6. Step 6: Final answer
    x = 491,327.91

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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.