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Finding the Fourth Proportional to 422,213.60, 633,361.95 and 122,696.81

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Solution

The fourth proportional to 422,213.60, 633,361.95 and 122,696.81 is: 184,057.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,213.60 : 633,361.95 = 122,696.81 : x
  2. Step 2: Convert to fraction form
    422,213.60/633,361.95 = 122,696.81/x
  3. Step 3: Cross multiply
    422,213.60x = 633,361.95 × 122,696.81
  4. Step 4: Simplify right side
    422,213.60x = 77,711,490,840.38
  5. Step 5: Solve for x
    x = 77,711,490,840.38/422,213.60
  6. Step 6: Final answer
    x = 184,057.29

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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.