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Finding the Fourth Proportional to 647,583.40, 969,819.90 and 619,589.80

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Solution

The fourth proportional to 647,583.40, 969,819.90 and 619,589.80 is: 927,896.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,583.40 : 969,819.90 = 619,589.80 : x
  2. Step 2: Convert to fraction form
    647,583.40/969,819.90 = 619,589.80/x
  3. Step 3: Cross multiply
    647,583.40x = 969,819.90 × 619,589.80
  4. Step 4: Simplify right side
    647,583.40x = 600,890,517,877.02
  5. Step 5: Solve for x
    x = 600,890,517,877.02/647,583.40
  6. Step 6: Final answer
    x = 927,896.73

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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.