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Finding the Fourth Proportional to 240,690.87, 361,086.12 and 72,204.39

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Solution

The fourth proportional to 240,690.87, 361,086.12 and 72,204.39 is: 108,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,690.87 : 361,086.12 = 72,204.39 : x
  2. Step 2: Convert to fraction form
    240,690.87/361,086.12 = 72,204.39/x
  3. Step 3: Cross multiply
    240,690.87x = 361,086.12 × 72,204.39
  4. Step 4: Simplify right side
    240,690.87x = 26,072,003,032.07
  5. Step 5: Solve for x
    x = 26,072,003,032.07/240,690.87
  6. Step 6: Final answer
    x = 108,321.53

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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.