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Finding the Fourth Proportional to 75,728.52, 104,505.48 and 43,916.04

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Solution

The fourth proportional to 75,728.52, 104,505.48 and 43,916.04 is: 60,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,728.52 : 104,505.48 = 43,916.04 : x
  2. Step 2: Convert to fraction form
    75,728.52/104,505.48 = 43,916.04/x
  3. Step 3: Cross multiply
    75,728.52x = 104,505.48 × 43,916.04
  4. Step 4: Simplify right side
    75,728.52x = 4,589,466,839.90
  5. Step 5: Solve for x
    x = 4,589,466,839.90/75,728.52
  6. Step 6: Final answer
    x = 60,604.21

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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.