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Finding the Fourth Proportional to 111,789.36, 154,333.08 and 74,114.64

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Solution

The fourth proportional to 111,789.36, 154,333.08 and 74,114.64 is: 102,320.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,789.36 : 154,333.08 = 74,114.64 : x
  2. Step 2: Convert to fraction form
    111,789.36/154,333.08 = 74,114.64/x
  3. Step 3: Cross multiply
    111,789.36x = 154,333.08 × 74,114.64
  4. Step 4: Simplify right side
    111,789.36x = 11,438,340,664.29
  5. Step 5: Solve for x
    x = 11,438,340,664.29/111,789.36
  6. Step 6: Final answer
    x = 102,320.48

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