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Finding the Fourth Proportional to 57,691.36, 79,569.30 and 36,462.88

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Solution

The fourth proportional to 57,691.36, 79,569.30 and 36,462.88 is: 50,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,691.36 : 79,569.30 = 36,462.88 : x
  2. Step 2: Convert to fraction form
    57,691.36/79,569.30 = 36,462.88/x
  3. Step 3: Cross multiply
    57,691.36x = 79,569.30 × 36,462.88
  4. Step 4: Simplify right side
    57,691.36x = 2,901,325,837.58
  5. Step 5: Solve for x
    x = 2,901,325,837.58/57,691.36
  6. Step 6: Final answer
    x = 50,290.47

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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.