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Finding the Fourth Proportional to 262,695.69, 394,098.95 and 85,188.93

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Solution

The fourth proportional to 262,695.69, 394,098.95 and 85,188.93 is: 127,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,695.69 : 394,098.95 = 85,188.93 : x
  2. Step 2: Convert to fraction form
    262,695.69/394,098.95 = 85,188.93/x
  3. Step 3: Cross multiply
    262,695.69x = 394,098.95 × 85,188.93
  4. Step 4: Simplify right side
    262,695.69x = 33,572,867,438.68
  5. Step 5: Solve for x
    x = 33,572,867,438.68/262,695.69
  6. Step 6: Final answer
    x = 127,801.36

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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.