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Finding the Fourth Proportional to 411,493.56, 617,177.95 and 111,997.48

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Solution

The fourth proportional to 411,493.56, 617,177.95 and 111,997.48 is: 167,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,493.56 : 617,177.95 = 111,997.48 : x
  2. Step 2: Convert to fraction form
    411,493.56/617,177.95 = 111,997.48/x
  3. Step 3: Cross multiply
    411,493.56x = 617,177.95 × 111,997.48
  4. Step 4: Simplify right side
    411,493.56x = 69,122,371,465.69
  5. Step 5: Solve for x
    x = 69,122,371,465.69/411,493.56
  6. Step 6: Final answer
    x = 167,979.23

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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.