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Finding the Fourth Proportional to 57,678.88, 79,611.28 and 32,542.96

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Solution

The fourth proportional to 57,678.88, 79,611.28 and 32,542.96 is: 44,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,678.88 : 79,611.28 = 32,542.96 : x
  2. Step 2: Convert to fraction form
    57,678.88/79,611.28 = 32,542.96/x
  3. Step 3: Cross multiply
    57,678.88x = 79,611.28 × 32,542.96
  4. Step 4: Simplify right side
    57,678.88x = 2,590,786,700.59
  5. Step 5: Solve for x
    x = 2,590,786,700.59/57,678.88
  6. Step 6: Final answer
    x = 44,917.42

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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.