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Finding the Fourth Proportional to 57,986.84, 80,019.60 and 32,836.40

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Solution

The fourth proportional to 57,986.84, 80,019.60 and 32,836.40 is: 45,312.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,986.84 : 80,019.60 = 32,836.40 : x
  2. Step 2: Convert to fraction form
    57,986.84/80,019.60 = 32,836.40/x
  3. Step 3: Cross multiply
    57,986.84x = 80,019.60 × 32,836.40
  4. Step 4: Simplify right side
    57,986.84x = 2,627,555,593.44
  5. Step 5: Solve for x
    x = 2,627,555,593.44/57,986.84
  6. Step 6: Final answer
    x = 45,312.96

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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.