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Finding the Fourth Proportional to 124,257.75, 171,491.90 and 73,956.75

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Solution

The fourth proportional to 124,257.75, 171,491.90 and 73,956.75 is: 102,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,257.75 : 171,491.90 = 73,956.75 : x
  2. Step 2: Convert to fraction form
    124,257.75/171,491.90 = 73,956.75/x
  3. Step 3: Cross multiply
    124,257.75x = 171,491.90 × 73,956.75
  4. Step 4: Simplify right side
    124,257.75x = 12,682,983,205.54
  5. Step 5: Solve for x
    x = 12,682,983,205.54/124,257.75
  6. Step 6: Final answer
    x = 102,069.96

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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.