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Finding the Fourth Proportional to 111,122.40, 166,489.44 and 92,521.92

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Solution

The fourth proportional to 111,122.40, 166,489.44 and 92,521.92 is: 138,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,122.40 : 166,489.44 = 92,521.92 : x
  2. Step 2: Convert to fraction form
    111,122.40/166,489.44 = 92,521.92/x
  3. Step 3: Cross multiply
    111,122.40x = 166,489.44 × 92,521.92
  4. Step 4: Simplify right side
    111,122.40x = 15,403,922,648.52
  5. Step 5: Solve for x
    x = 15,403,922,648.52/111,122.40
  6. Step 6: Final answer
    x = 138,621.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.