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Finding the Fourth Proportional to 627,715.95, 866,237.79 and 341,243.25

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Solution

The fourth proportional to 627,715.95, 866,237.79 and 341,243.25 is: 470,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,715.95 : 866,237.79 = 341,243.25 : x
  2. Step 2: Convert to fraction form
    627,715.95/866,237.79 = 341,243.25/x
  3. Step 3: Cross multiply
    627,715.95x = 866,237.79 × 341,243.25
  4. Step 4: Simplify right side
    627,715.95x = 295,597,798,732.42
  5. Step 5: Solve for x
    x = 295,597,798,732.42/627,715.95
  6. Step 6: Final answer
    x = 470,910.13

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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.