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Finding the Fourth Proportional to 99,793.82, 149,690.46 and 40,615.50

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Solution

The fourth proportional to 99,793.82, 149,690.46 and 40,615.50 is: 60,923.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793.82 : 149,690.46 = 40,615.50 : x
  2. Step 2: Convert to fraction form
    99,793.82/149,690.46 = 40,615.50/x
  3. Step 3: Cross multiply
    99,793.82x = 149,690.46 × 40,615.50
  4. Step 4: Simplify right side
    99,793.82x = 6,079,752,878.13
  5. Step 5: Solve for x
    x = 6,079,752,878.13/99,793.82
  6. Step 6: Final answer
    x = 60,923.14

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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.