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Finding the Fourth Proportional to 666,170.25, 999,263.88 and 192,856.07

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Solution

The fourth proportional to 666,170.25, 999,263.88 and 192,856.07 is: 289,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,170.25 : 999,263.88 = 192,856.07 : x
  2. Step 2: Convert to fraction form
    666,170.25/999,263.88 = 192,856.07/x
  3. Step 3: Cross multiply
    666,170.25x = 999,263.88 × 192,856.07
  4. Step 4: Simplify right side
    666,170.25x = 192,714,099,793.43
  5. Step 5: Solve for x
    x = 192,714,099,793.43/666,170.25
  6. Step 6: Final answer
    x = 289,286.56

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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.