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Finding the Fourth Proportional to 617,851.20, 926,690.40 and 197,169.60

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Solution

The fourth proportional to 617,851.20, 926,690.40 and 197,169.60 is: 295,726.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,851.20 : 926,690.40 = 197,169.60 : x
  2. Step 2: Convert to fraction form
    617,851.20/926,690.40 = 197,169.60/x
  3. Step 3: Cross multiply
    617,851.20x = 926,690.40 × 197,169.60
  4. Step 4: Simplify right side
    617,851.20x = 182,715,175,491.84
  5. Step 5: Solve for x
    x = 182,715,175,491.84/617,851.20
  6. Step 6: Final answer
    x = 295,726.83

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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.