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Finding the Fourth Proportional to 391,881.32, 587,735.58 and 192,003.56

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Solution

The fourth proportional to 391,881.32, 587,735.58 and 192,003.56 is: 287,963.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,881.32 : 587,735.58 = 192,003.56 : x
  2. Step 2: Convert to fraction form
    391,881.32/587,735.58 = 192,003.56/x
  3. Step 3: Cross multiply
    391,881.32x = 587,735.58 × 192,003.56
  4. Step 4: Simplify right side
    391,881.32x = 112,847,323,698.67
  5. Step 5: Solve for x
    x = 112,847,323,698.67/391,881.32
  6. Step 6: Final answer
    x = 287,963.01

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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.