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Finding the Fourth Proportional to 100,934.70, 151,231.95 and 79,793.70

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Solution

The fourth proportional to 100,934.70, 151,231.95 and 79,793.70 is: 119,556.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,934.70 : 151,231.95 = 79,793.70 : x
  2. Step 2: Convert to fraction form
    100,934.70/151,231.95 = 79,793.70/x
  3. Step 3: Cross multiply
    100,934.70x = 151,231.95 × 79,793.70
  4. Step 4: Simplify right side
    100,934.70x = 12,067,356,848.72
  5. Step 5: Solve for x
    x = 12,067,356,848.72/100,934.70
  6. Step 6: Final answer
    x = 119,556.08

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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.