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Finding the Fourth Proportional to 120,471.01, 166,245.51 and 69,485.83

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Solution

The fourth proportional to 120,471.01, 166,245.51 and 69,485.83 is: 95,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,471.01 : 166,245.51 = 69,485.83 : x
  2. Step 2: Convert to fraction form
    120,471.01/166,245.51 = 69,485.83/x
  3. Step 3: Cross multiply
    120,471.01x = 166,245.51 × 69,485.83
  4. Step 4: Simplify right side
    120,471.01x = 11,551,707,246.12
  5. Step 5: Solve for x
    x = 11,551,707,246.12/120,471.01
  6. Step 6: Final answer
    x = 95,887.86

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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.