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Finding the Fourth Proportional to 627,866.10, 866,457.09 and 341,387.30

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Solution

The fourth proportional to 627,866.10, 866,457.09 and 341,387.30 is: 471,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,866.10 : 866,457.09 = 341,387.30 : x
  2. Step 2: Convert to fraction form
    627,866.10/866,457.09 = 341,387.30/x
  3. Step 3: Cross multiply
    627,866.10x = 866,457.09 × 341,387.30
  4. Step 4: Simplify right side
    627,866.10x = 295,797,446,520.96
  5. Step 5: Solve for x
    x = 295,797,446,520.96/627,866.10
  6. Step 6: Final answer
    x = 471,115.49

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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.