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Finding the Fourth Proportional to 411,940.60, 617,910.90 and 190,324.60

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Solution

The fourth proportional to 411,940.60, 617,910.90 and 190,324.60 is: 285,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,940.60 : 617,910.90 = 190,324.60 : x
  2. Step 2: Convert to fraction form
    411,940.60/617,910.90 = 190,324.60/x
  3. Step 3: Cross multiply
    411,940.60x = 617,910.90 × 190,324.60
  4. Step 4: Simplify right side
    411,940.60x = 117,603,644,878.14
  5. Step 5: Solve for x
    x = 117,603,644,878.14/411,940.60
  6. Step 6: Final answer
    x = 285,486.90

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1.5x scale

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.