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Finding the Fourth Proportional to 51,990.66, 71,741.88 and 29,327.58

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Solution

The fourth proportional to 51,990.66, 71,741.88 and 29,327.58 is: 40,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,990.66 : 71,741.88 = 29,327.58 : x
  2. Step 2: Convert to fraction form
    51,990.66/71,741.88 = 29,327.58/x
  3. Step 3: Cross multiply
    51,990.66x = 71,741.88 × 29,327.58
  4. Step 4: Simplify right side
    51,990.66x = 2,104,015,725.05
  5. Step 5: Solve for x
    x = 2,104,015,725.05/51,990.66
  6. Step 6: Final answer
    x = 40,469.11

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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.