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Finding the Fourth Proportional to 91,174.20, 136,664.10 and 34,992.60

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Solution

The fourth proportional to 91,174.20, 136,664.10 and 34,992.60 is: 52,451.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,174.20 : 136,664.10 = 34,992.60 : x
  2. Step 2: Convert to fraction form
    91,174.20/136,664.10 = 34,992.60/x
  3. Step 3: Cross multiply
    91,174.20x = 136,664.10 × 34,992.60
  4. Step 4: Simplify right side
    91,174.20x = 4,782,232,185.66
  5. Step 5: Solve for x
    x = 4,782,232,185.66/91,174.20
  6. Step 6: Final answer
    x = 52,451.59

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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.