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Finding the Fourth Proportional to 627,865.10, 866,430.15 and 341,375.30

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Solution

The fourth proportional to 627,865.10, 866,430.15 and 341,375.30 is: 471,085.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,865.10 : 866,430.15 = 341,375.30 : x
  2. Step 2: Convert to fraction form
    627,865.10/866,430.15 = 341,375.30/x
  3. Step 3: Cross multiply
    627,865.10x = 866,430.15 × 341,375.30
  4. Step 4: Simplify right side
    627,865.10x = 295,777,852,385.30
  5. Step 5: Solve for x
    x = 295,777,852,385.30/627,865.10
  6. Step 6: Final answer
    x = 471,085.03

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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.