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Finding the Fourth Proportional to 617,818.20, 926,640.90 and 197,136.60

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Solution

The fourth proportional to 617,818.20, 926,640.90 and 197,136.60 is: 295,677.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,818.20 : 926,640.90 = 197,136.60 : x
  2. Step 2: Convert to fraction form
    617,818.20/926,640.90 = 197,136.60/x
  3. Step 3: Cross multiply
    617,818.20x = 926,640.90 × 197,136.60
  4. Step 4: Simplify right side
    617,818.20x = 182,674,836,446.94
  5. Step 5: Solve for x
    x = 182,674,836,446.94/617,818.20
  6. Step 6: Final answer
    x = 295,677.33

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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.