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Finding the Fourth Proportional to 111,747.66, 154,211.77 and 61,446.66

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Solution

The fourth proportional to 111,747.66, 154,211.77 and 61,446.66 is: 84,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,747.66 : 154,211.77 = 61,446.66 : x
  2. Step 2: Convert to fraction form
    111,747.66/154,211.77 = 61,446.66/x
  3. Step 3: Cross multiply
    111,747.66x = 154,211.77 × 61,446.66
  4. Step 4: Simplify right side
    111,747.66x = 9,475,797,467.28
  5. Step 5: Solve for x
    x = 9,475,797,467.28/111,747.66
  6. Step 6: Final answer
    x = 84,796.39

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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.