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Finding the Fourth Proportional to 627,622.68, 866,608.08 and 386,017.56

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Solution

The fourth proportional to 627,622.68, 866,608.08 and 386,017.56 is: 533,004.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,622.68 : 866,608.08 = 386,017.56 : x
  2. Step 2: Convert to fraction form
    627,622.68/866,608.08 = 386,017.56/x
  3. Step 3: Cross multiply
    627,622.68x = 866,608.08 × 386,017.56
  4. Step 4: Simplify right side
    627,622.68x = 334,525,936,517.89
  5. Step 5: Solve for x
    x = 334,525,936,517.89/627,622.68
  6. Step 6: Final answer
    x = 533,004.86

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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.