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Finding the Fourth Proportional to 57,728.70, 79,683.75 and 33,865.02

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Solution

The fourth proportional to 57,728.70, 79,683.75 and 33,865.02 is: 46,744.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,728.70 : 79,683.75 = 33,865.02 : x
  2. Step 2: Convert to fraction form
    57,728.70/79,683.75 = 33,865.02/x
  3. Step 3: Cross multiply
    57,728.70x = 79,683.75 × 33,865.02
  4. Step 4: Simplify right side
    57,728.70x = 2,698,491,787.43
  5. Step 5: Solve for x
    x = 2,698,491,787.43/57,728.70
  6. Step 6: Final answer
    x = 46,744.37

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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.