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Finding the Fourth Proportional to 13,596.88, 20,390.20 and 6,574.56

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Solution

The fourth proportional to 13,596.88, 20,390.20 and 6,574.56 is: 9,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.88 : 20,390.20 = 6,574.56 : x
  2. Step 2: Convert to fraction form
    13,596.88/20,390.20 = 6,574.56/x
  3. Step 3: Cross multiply
    13,596.88x = 20,390.20 × 6,574.56
  4. Step 4: Simplify right side
    13,596.88x = 134,056,560.44
  5. Step 5: Solve for x
    x = 134,056,560.44/13,596.88
  6. Step 6: Final answer
    x = 9,859.36

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1.5x scale

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.