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Finding the Fourth Proportional to 25,792.80, 38,660.40 and 14,704.80

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Solution

The fourth proportional to 25,792.80, 38,660.40 and 14,704.80 is: 22,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,792.80 : 38,660.40 = 14,704.80 : x
  2. Step 2: Convert to fraction form
    25,792.80/38,660.40 = 14,704.80/x
  3. Step 3: Cross multiply
    25,792.80x = 38,660.40 × 14,704.80
  4. Step 4: Simplify right side
    25,792.80x = 568,493,449.92
  5. Step 5: Solve for x
    x = 568,493,449.92/25,792.80
  6. Step 6: Final answer
    x = 22,040.78

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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.