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Finding the Fourth Proportional to 111,750.22, 154,215.31 and 61,449.22

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Solution

The fourth proportional to 111,750.22, 154,215.31 and 61,449.22 is: 84,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.22 : 154,215.31 = 61,449.22 : x
  2. Step 2: Convert to fraction form
    111,750.22/154,215.31 = 61,449.22/x
  3. Step 3: Cross multiply
    111,750.22x = 154,215.31 × 61,449.22
  4. Step 4: Simplify right side
    111,750.22x = 9,476,410,511.56
  5. Step 5: Solve for x
    x = 9,476,410,511.56/111,750.22
  6. Step 6: Final answer
    x = 84,799.93

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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.