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Finding the Fourth Proportional to 31,596.96, 43,599.96 and 20,107.92

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Solution

The fourth proportional to 31,596.96, 43,599.96 and 20,107.92 is: 27,746.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,596.96 : 43,599.96 = 20,107.92 : x
  2. Step 2: Convert to fraction form
    31,596.96/43,599.96 = 20,107.92/x
  3. Step 3: Cross multiply
    31,596.96x = 43,599.96 × 20,107.92
  4. Step 4: Simplify right side
    31,596.96x = 876,704,507.68
  5. Step 5: Solve for x
    x = 876,704,507.68/31,596.96
  6. Step 6: Final answer
    x = 27,746.48

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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.