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Finding the Fourth Proportional to 57,940.61, 79,959.24 and 35,280.54

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Solution

The fourth proportional to 57,940.61, 79,959.24 and 35,280.54 is: 48,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,940.61 : 79,959.24 = 35,280.54 : x
  2. Step 2: Convert to fraction form
    57,940.61/79,959.24 = 35,280.54/x
  3. Step 3: Cross multiply
    57,940.61x = 79,959.24 × 35,280.54
  4. Step 4: Simplify right side
    57,940.61x = 2,821,005,165.19
  5. Step 5: Solve for x
    x = 2,821,005,165.19/57,940.61
  6. Step 6: Final answer
    x = 48,687.88

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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.