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Finding the Fourth Proportional to 173,956.21, 239,917.22 and 122,443.83

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Solution

The fourth proportional to 173,956.21, 239,917.22 and 122,443.83 is: 168,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,956.21 : 239,917.22 = 122,443.83 : x
  2. Step 2: Convert to fraction form
    173,956.21/239,917.22 = 122,443.83/x
  3. Step 3: Cross multiply
    173,956.21x = 239,917.22 × 122,443.83
  4. Step 4: Simplify right side
    173,956.21x = 29,376,382,902.40
  5. Step 5: Solve for x
    x = 29,376,382,902.40/173,956.21
  6. Step 6: Final answer
    x = 168,872.29

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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.