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Finding the Fourth Proportional to 51,093.87, 70,487.46 and 29,278.55

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Solution

The fourth proportional to 51,093.87, 70,487.46 and 29,278.55 is: 40,391.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,093.87 : 70,487.46 = 29,278.55 : x
  2. Step 2: Convert to fraction form
    51,093.87/70,487.46 = 29,278.55/x
  3. Step 3: Cross multiply
    51,093.87x = 70,487.46 × 29,278.55
  4. Step 4: Simplify right side
    51,093.87x = 2,063,770,621.98
  5. Step 5: Solve for x
    x = 2,063,770,621.98/51,093.87
  6. Step 6: Final answer
    x = 40,391.75

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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.