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Finding the Fourth Proportional to 57,913.54, 79,879.49 and 53,148.87

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Solution

The fourth proportional to 57,913.54, 79,879.49 and 53,148.87 is: 73,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,913.54 : 79,879.49 = 53,148.87 : x
  2. Step 2: Convert to fraction form
    57,913.54/79,879.49 = 53,148.87/x
  3. Step 3: Cross multiply
    57,913.54x = 79,879.49 × 53,148.87
  4. Step 4: Simplify right side
    57,913.54x = 4,245,504,825.05
  5. Step 5: Solve for x
    x = 4,245,504,825.05/57,913.54
  6. Step 6: Final answer
    x = 73,307.63

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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.