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Finding the Fourth Proportional to 57,313.72, 85,969.77 and 17,871.22

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Solution

The fourth proportional to 57,313.72, 85,969.77 and 17,871.22 is: 26,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,313.72 : 85,969.77 = 17,871.22 : x
  2. Step 2: Convert to fraction form
    57,313.72/85,969.77 = 17,871.22/x
  3. Step 3: Cross multiply
    57,313.72x = 85,969.77 × 17,871.22
  4. Step 4: Simplify right side
    57,313.72x = 1,536,384,673.02
  5. Step 5: Solve for x
    x = 1,536,384,673.02/57,313.72
  6. Step 6: Final answer
    x = 26,806.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.