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Finding the Fourth Proportional to 627,939.95, 866,530.71 and 356,026.13

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Solution

The fourth proportional to 627,939.95, 866,530.71 and 356,026.13 is: 491,301.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,939.95 : 866,530.71 = 356,026.13 : x
  2. Step 2: Convert to fraction form
    627,939.95/866,530.71 = 356,026.13/x
  3. Step 3: Cross multiply
    627,939.95x = 866,530.71 × 356,026.13
  4. Step 4: Simplify right side
    627,939.95x = 308,507,578,998.52
  5. Step 5: Solve for x
    x = 308,507,578,998.52/627,939.95
  6. Step 6: Final answer
    x = 491,301.09

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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.