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Finding the Fourth Proportional to 263,201.66, 394,802.55 and 73,689.95

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Solution

The fourth proportional to 263,201.66, 394,802.55 and 73,689.95 is: 110,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,201.66 : 394,802.55 = 73,689.95 : x
  2. Step 2: Convert to fraction form
    263,201.66/394,802.55 = 73,689.95/x
  3. Step 3: Cross multiply
    263,201.66x = 394,802.55 × 73,689.95
  4. Step 4: Simplify right side
    263,201.66x = 29,092,978,195.36
  5. Step 5: Solve for x
    x = 29,092,978,195.36/263,201.66
  6. Step 6: Final answer
    x = 110,534.94

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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.