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Finding the Fourth Proportional to 627,821.80, 941,732.70 and 579,898.60

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Solution

The fourth proportional to 627,821.80, 941,732.70 and 579,898.60 is: 869,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,821.80 : 941,732.70 = 579,898.60 : x
  2. Step 2: Convert to fraction form
    627,821.80/941,732.70 = 579,898.60/x
  3. Step 3: Cross multiply
    627,821.80x = 941,732.70 × 579,898.60
  4. Step 4: Simplify right side
    627,821.80x = 546,109,474,304.22
  5. Step 5: Solve for x
    x = 546,109,474,304.22/627,821.80
  6. Step 6: Final answer
    x = 869,847.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.