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Finding the Fourth Proportional to 108,515.80, 162,773.70 and 106,571.80

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Solution

The fourth proportional to 108,515.80, 162,773.70 and 106,571.80 is: 159,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.80 : 162,773.70 = 106,571.80 : x
  2. Step 2: Convert to fraction form
    108,515.80/162,773.70 = 106,571.80/x
  3. Step 3: Cross multiply
    108,515.80x = 162,773.70 × 106,571.80
  4. Step 4: Simplify right side
    108,515.80x = 17,347,086,201.66
  5. Step 5: Solve for x
    x = 17,347,086,201.66/108,515.80
  6. Step 6: Final answer
    x = 159,857.70

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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.