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Finding the Fourth Proportional to 29,687.53, 40,973.42 and 16,940.69

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Solution

The fourth proportional to 29,687.53, 40,973.42 and 16,940.69 is: 23,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,687.53 : 40,973.42 = 16,940.69 : x
  2. Step 2: Convert to fraction form
    29,687.53/40,973.42 = 16,940.69/x
  3. Step 3: Cross multiply
    29,687.53x = 40,973.42 × 16,940.69
  4. Step 4: Simplify right side
    29,687.53x = 694,118,006.46
  5. Step 5: Solve for x
    x = 694,118,006.46/29,687.53
  6. Step 6: Final answer
    x = 23,380.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.