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Finding the Fourth Proportional to 120,257.93, 165,956.24 and 66,546.63

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Solution

The fourth proportional to 120,257.93, 165,956.24 and 66,546.63 is: 91,834.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,257.93 : 165,956.24 = 66,546.63 : x
  2. Step 2: Convert to fraction form
    120,257.93/165,956.24 = 66,546.63/x
  3. Step 3: Cross multiply
    120,257.93x = 165,956.24 × 66,546.63
  4. Step 4: Simplify right side
    120,257.93x = 11,043,828,665.84
  5. Step 5: Solve for x
    x = 11,043,828,665.84/120,257.93
  6. Step 6: Final answer
    x = 91,834.51

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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.