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Finding the Fourth Proportional to 68,491.52, 102,745.47 and 29,043.50

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Solution

The fourth proportional to 68,491.52, 102,745.47 and 29,043.50 is: 43,568.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,491.52 : 102,745.47 = 29,043.50 : x
  2. Step 2: Convert to fraction form
    68,491.52/102,745.47 = 29,043.50/x
  3. Step 3: Cross multiply
    68,491.52x = 102,745.47 × 29,043.50
  4. Step 4: Simplify right side
    68,491.52x = 2,984,088,057.95
  5. Step 5: Solve for x
    x = 2,984,088,057.95/68,491.52
  6. Step 6: Final answer
    x = 43,568.72

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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.