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Finding the Fourth Proportional to 68,890.76, 103,239.90 and 37,232.58

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Solution

The fourth proportional to 68,890.76, 103,239.90 and 37,232.58 is: 55,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,890.76 : 103,239.90 = 37,232.58 : x
  2. Step 2: Convert to fraction form
    68,890.76/103,239.90 = 37,232.58/x
  3. Step 3: Cross multiply
    68,890.76x = 103,239.90 × 37,232.58
  4. Step 4: Simplify right side
    68,890.76x = 3,843,887,835.94
  5. Step 5: Solve for x
    x = 3,843,887,835.94/68,890.76
  6. Step 6: Final answer
    x = 55,796.86

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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.