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Finding the Fourth Proportional to 57,751.91, 79,700.28 and 31,914.09

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Solution

The fourth proportional to 57,751.91, 79,700.28 and 31,914.09 is: 44,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,751.91 : 79,700.28 = 31,914.09 : x
  2. Step 2: Convert to fraction form
    57,751.91/79,700.28 = 31,914.09/x
  3. Step 3: Cross multiply
    57,751.91x = 79,700.28 × 31,914.09
  4. Step 4: Simplify right side
    57,751.91x = 2,543,561,908.95
  5. Step 5: Solve for x
    x = 2,543,561,908.95/57,751.91
  6. Step 6: Final answer
    x = 44,042.91

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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.