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Finding the Fourth Proportional to 120,908.63, 166,864.52 and 67,204.55

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Solution

The fourth proportional to 120,908.63, 166,864.52 and 67,204.55 is: 92,748.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,908.63 : 166,864.52 = 67,204.55 : x
  2. Step 2: Convert to fraction form
    120,908.63/166,864.52 = 67,204.55/x
  3. Step 3: Cross multiply
    120,908.63x = 166,864.52 × 67,204.55
  4. Step 4: Simplify right side
    120,908.63x = 11,214,054,977.57
  5. Step 5: Solve for x
    x = 11,214,054,977.57/120,908.63
  6. Step 6: Final answer
    x = 92,748.18

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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.