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Finding the Fourth Proportional to 68,771.36, 103,162.53 and 29,328.83

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Solution

The fourth proportional to 68,771.36, 103,162.53 and 29,328.83 is: 43,995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,771.36 : 103,162.53 = 29,328.83 : x
  2. Step 2: Convert to fraction form
    68,771.36/103,162.53 = 29,328.83/x
  3. Step 3: Cross multiply
    68,771.36x = 103,162.53 × 29,328.83
  4. Step 4: Simplify right side
    68,771.36x = 3,025,636,304.74
  5. Step 5: Solve for x
    x = 3,025,636,304.74/68,771.36
  6. Step 6: Final answer
    x = 43,995.59

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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.