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Finding the Fourth Proportional to 120,672.40, 166,525.35 and 66,956.26

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Solution

The fourth proportional to 120,672.40, 166,525.35 and 66,956.26 is: 92,398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,672.40 : 166,525.35 = 66,956.26 : x
  2. Step 2: Convert to fraction form
    120,672.40/166,525.35 = 66,956.26/x
  3. Step 3: Cross multiply
    120,672.40x = 166,525.35 × 66,956.26
  4. Step 4: Simplify right side
    120,672.40x = 11,149,914,631.19
  5. Step 5: Solve for x
    x = 11,149,914,631.19/120,672.40
  6. Step 6: Final answer
    x = 92,398.22

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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.