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Finding the Fourth Proportional to 28,993.96, 43,480.68 and 13,794.72

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Solution

The fourth proportional to 28,993.96, 43,480.68 and 13,794.72 is: 20,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.96 : 43,480.68 = 13,794.72 : x
  2. Step 2: Convert to fraction form
    28,993.96/43,480.68 = 13,794.72/x
  3. Step 3: Cross multiply
    28,993.96x = 43,480.68 × 13,794.72
  4. Step 4: Simplify right side
    28,993.96x = 599,803,806.01
  5. Step 5: Solve for x
    x = 599,803,806.01/28,993.96
  6. Step 6: Final answer
    x = 20,687.20

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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.