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Finding the Fourth Proportional to 57,270, 79,067.16 and 37,432.56

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Solution

The fourth proportional to 57,270, 79,067.16 and 37,432.56 is: 51,679.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,270 : 79,067.16 = 37,432.56 : x
  2. Step 2: Convert to fraction form
    57,270/79,067.16 = 37,432.56/x
  3. Step 3: Cross multiply
    57,270x = 79,067.16 × 37,432.56
  4. Step 4: Simplify right side
    57,270x = 2,959,686,210.73
  5. Step 5: Solve for x
    x = 2,959,686,210.73/57,270
  6. Step 6: Final answer
    x = 51,679.52

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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.