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Finding the Fourth Proportional to 109,659.80, 164,489.70 and 94,107.80

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Solution

The fourth proportional to 109,659.80, 164,489.70 and 94,107.80 is: 141,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,659.80 : 164,489.70 = 94,107.80 : x
  2. Step 2: Convert to fraction form
    109,659.80/164,489.70 = 94,107.80/x
  3. Step 3: Cross multiply
    109,659.80x = 164,489.70 × 94,107.80
  4. Step 4: Simplify right side
    109,659.80x = 15,479,763,789.66
  5. Step 5: Solve for x
    x = 15,479,763,789.66/109,659.80
  6. Step 6: Final answer
    x = 141,161.70

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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.