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Finding the Fourth Proportional to 627,989.12, 866,616.86 and 341,503.06

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Solution

The fourth proportional to 627,989.12, 866,616.86 and 341,503.06 is: 471,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,989.12 : 866,616.86 = 341,503.06 : x
  2. Step 2: Convert to fraction form
    627,989.12/866,616.86 = 341,503.06/x
  3. Step 3: Cross multiply
    627,989.12x = 866,616.86 × 341,503.06
  4. Step 4: Simplify right side
    627,989.12x = 295,952,309,537.59
  5. Step 5: Solve for x
    x = 295,952,309,537.59/627,989.12
  6. Step 6: Final answer
    x = 471,269.80

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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.