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Finding the Fourth Proportional to 40,512.80, 60,696.30 and 34,680.80

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Solution

The fourth proportional to 40,512.80, 60,696.30 and 34,680.80 is: 51,958.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,512.80 : 60,696.30 = 34,680.80 : x
  2. Step 2: Convert to fraction form
    40,512.80/60,696.30 = 34,680.80/x
  3. Step 3: Cross multiply
    40,512.80x = 60,696.30 × 34,680.80
  4. Step 4: Simplify right side
    40,512.80x = 2,104,996,241.04
  5. Step 5: Solve for x
    x = 2,104,996,241.04/40,512.80
  6. Step 6: Final answer
    x = 51,958.79

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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.