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Finding the Fourth Proportional to 422,236.44, 633,396.15 and 122,719.50

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Solution

The fourth proportional to 422,236.44, 633,396.15 and 122,719.50 is: 184,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,236.44 : 633,396.15 = 122,719.50 : x
  2. Step 2: Convert to fraction form
    422,236.44/633,396.15 = 122,719.50/x
  3. Step 3: Cross multiply
    422,236.44x = 633,396.15 × 122,719.50
  4. Step 4: Simplify right side
    422,236.44x = 77,730,058,829.93
  5. Step 5: Solve for x
    x = 77,730,058,829.93/422,236.44
  6. Step 6: Final answer
    x = 184,091.31

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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.