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Finding the Fourth Proportional to 262,940.40, 394,585.29 and 96,728.40

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Solution

The fourth proportional to 262,940.40, 394,585.29 and 96,728.40 is: 145,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,940.40 : 394,585.29 = 96,728.40 : x
  2. Step 2: Convert to fraction form
    262,940.40/394,585.29 = 96,728.40/x
  3. Step 3: Cross multiply
    262,940.40x = 394,585.29 × 96,728.40
  4. Step 4: Simplify right side
    262,940.40x = 38,167,603,765.24
  5. Step 5: Solve for x
    x = 38,167,603,765.24/262,940.40
  6. Step 6: Final answer
    x = 145,156.86

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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.