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Finding the Fourth Proportional to 57,392.59, 79,201.21 and 31,899.01

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Solution

The fourth proportional to 57,392.59, 79,201.21 and 31,899.01 is: 44,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,392.59 : 79,201.21 = 31,899.01 : x
  2. Step 2: Convert to fraction form
    57,392.59/79,201.21 = 31,899.01/x
  3. Step 3: Cross multiply
    57,392.59x = 79,201.21 × 31,899.01
  4. Step 4: Simplify right side
    57,392.59x = 2,526,440,189.80
  5. Step 5: Solve for x
    x = 2,526,440,189.80/57,392.59
  6. Step 6: Final answer
    x = 44,020.32

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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.