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Finding the Fourth Proportional to 57,390.34, 79,198.11 and 31,896.76

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Solution

The fourth proportional to 57,390.34, 79,198.11 and 31,896.76 is: 44,017.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.34 : 79,198.11 = 31,896.76 : x
  2. Step 2: Convert to fraction form
    57,390.34/79,198.11 = 31,896.76/x
  3. Step 3: Cross multiply
    57,390.34x = 79,198.11 × 31,896.76
  4. Step 4: Simplify right side
    57,390.34x = 2,526,163,107.12
  5. Step 5: Solve for x
    x = 2,526,163,107.12/57,390.34
  6. Step 6: Final answer
    x = 44,017.22

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1.5x scale

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.