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Finding the Fourth Proportional to 120,896.93, 166,789.99 and 69,900.32

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Solution

The fourth proportional to 120,896.93, 166,789.99 and 69,900.32 is: 96,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,896.93 : 166,789.99 = 69,900.32 : x
  2. Step 2: Convert to fraction form
    120,896.93/166,789.99 = 69,900.32/x
  3. Step 3: Cross multiply
    120,896.93x = 166,789.99 × 69,900.32
  4. Step 4: Simplify right side
    120,896.93x = 11,658,672,665.10
  5. Step 5: Solve for x
    x = 11,658,672,665.10/120,896.93
  6. Step 6: Final answer
    x = 96,434.82

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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.