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Finding the Fourth Proportional to 120,956.80, 166,955.18 and 70,003.98

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Solution

The fourth proportional to 120,956.80, 166,955.18 and 70,003.98 is: 96,625.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,956.80 : 166,955.18 = 70,003.98 : x
  2. Step 2: Convert to fraction form
    120,956.80/166,955.18 = 70,003.98/x
  3. Step 3: Cross multiply
    120,956.80x = 166,955.18 × 70,003.98
  4. Step 4: Simplify right side
    120,956.80x = 11,687,526,558.29
  5. Step 5: Solve for x
    x = 11,687,526,558.29/120,956.80
  6. Step 6: Final answer
    x = 96,625.62

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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.