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Finding the Fourth Proportional to 262,956.88, 394,185.64 and 85,339.68

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Solution

The fourth proportional to 262,956.88, 394,185.64 and 85,339.68 is: 127,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,956.88 : 394,185.64 = 85,339.68 : x
  2. Step 2: Convert to fraction form
    262,956.88/394,185.64 = 85,339.68/x
  3. Step 3: Cross multiply
    262,956.88x = 394,185.64 × 85,339.68
  4. Step 4: Simplify right side
    262,956.88x = 33,639,674,846.66
  5. Step 5: Solve for x
    x = 33,639,674,846.66/262,956.88
  6. Step 6: Final answer
    x = 127,928.48

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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.