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Finding the Fourth Proportional to 111,889.52, 154,410.77 and 60,905.55

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Solution

The fourth proportional to 111,889.52, 154,410.77 and 60,905.55 is: 84,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,889.52 : 154,410.77 = 60,905.55 : x
  2. Step 2: Convert to fraction form
    111,889.52/154,410.77 = 60,905.55/x
  3. Step 3: Cross multiply
    111,889.52x = 154,410.77 × 60,905.55
  4. Step 4: Simplify right side
    111,889.52x = 9,404,473,604.08
  5. Step 5: Solve for x
    x = 9,404,473,604.08/111,889.52
  6. Step 6: Final answer
    x = 84,051.43

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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.