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Finding the Fourth Proportional to 120,586.66, 166,410.04 and 66,876.64

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Solution

The fourth proportional to 120,586.66, 166,410.04 and 66,876.64 is: 92,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,586.66 : 166,410.04 = 66,876.64 : x
  2. Step 2: Convert to fraction form
    120,586.66/166,410.04 = 66,876.64/x
  3. Step 3: Cross multiply
    120,586.66x = 166,410.04 × 66,876.64
  4. Step 4: Simplify right side
    120,586.66x = 11,128,944,337.47
  5. Step 5: Solve for x
    x = 11,128,944,337.47/120,586.66
  6. Step 6: Final answer
    x = 92,290.01

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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.