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Finding the Fourth Proportional to 57,418.52, 79,261.86 and 53,831.48

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Solution

The fourth proportional to 57,418.52, 79,261.86 and 53,831.48 is: 74,310.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,418.52 : 79,261.86 = 53,831.48 : x
  2. Step 2: Convert to fraction form
    57,418.52/79,261.86 = 53,831.48/x
  3. Step 3: Cross multiply
    57,418.52x = 79,261.86 × 53,831.48
  4. Step 4: Simplify right side
    57,418.52x = 4,266,783,231.35
  5. Step 5: Solve for x
    x = 4,266,783,231.35/57,418.52
  6. Step 6: Final answer
    x = 74,310.23

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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.