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Finding the Fourth Proportional to 411,897.70, 617,846.55 and 131,443.30

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Solution

The fourth proportional to 411,897.70, 617,846.55 and 131,443.30 is: 197,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,897.70 : 617,846.55 = 131,443.30 : x
  2. Step 2: Convert to fraction form
    411,897.70/617,846.55 = 131,443.30/x
  3. Step 3: Cross multiply
    411,897.70x = 617,846.55 × 131,443.30
  4. Step 4: Simplify right side
    411,897.70x = 81,211,789,425.62
  5. Step 5: Solve for x
    x = 81,211,789,425.62/411,897.70
  6. Step 6: Final answer
    x = 197,164.95

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Double scale
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Similar ratio
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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.