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Finding the Fourth Proportional to 122,956.05, 172,371.75 and 122,956.05

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Solution

The fourth proportional to 122,956.05, 172,371.75 and 122,956.05 is: 172,371.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.05 : 172,371.75 = 122,956.05 : x
  2. Step 2: Convert to fraction form
    122,956.05/172,371.75 = 122,956.05/x
  3. Step 3: Cross multiply
    122,956.05x = 172,371.75 × 122,956.05
  4. Step 4: Simplify right side
    122,956.05x = 21,194,149,511.59
  5. Step 5: Solve for x
    x = 21,194,149,511.59/122,956.05
  6. Step 6: Final answer
    x = 172,371.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.