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Finding the Fourth Proportional to 627,830.10, 866,407.41 and 341,351.28

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Solution

The fourth proportional to 627,830.10, 866,407.41 and 341,351.28 is: 471,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,830.10 : 866,407.41 = 341,351.28 : x
  2. Step 2: Convert to fraction form
    627,830.10/866,407.41 = 341,351.28/x
  3. Step 3: Cross multiply
    627,830.10x = 866,407.41 × 341,351.28
  4. Step 4: Simplify right side
    627,830.10x = 295,749,278,404.99
  5. Step 5: Solve for x
    x = 295,749,278,404.99/627,830.10
  6. Step 6: Final answer
    x = 471,065.78

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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.