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Finding the Fourth Proportional to 111,894.78, 154,414.44 and 61,593.78

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Solution

The fourth proportional to 111,894.78, 154,414.44 and 61,593.78 is: 84,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,894.78 : 154,414.44 = 61,593.78 : x
  2. Step 2: Convert to fraction form
    111,894.78/154,414.44 = 61,593.78/x
  3. Step 3: Cross multiply
    111,894.78x = 154,414.44 × 61,593.78
  4. Step 4: Simplify right side
    111,894.78x = 9,510,969,046.18
  5. Step 5: Solve for x
    x = 9,510,969,046.18/111,894.78
  6. Step 6: Final answer
    x = 84,999.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.