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Finding the Fourth Proportional to 13,362.56, 20,028.12 and 5,460.16

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Solution

The fourth proportional to 13,362.56, 20,028.12 and 5,460.16 is: 8,183.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.56 : 20,028.12 = 5,460.16 : x
  2. Step 2: Convert to fraction form
    13,362.56/20,028.12 = 5,460.16/x
  3. Step 3: Cross multiply
    13,362.56x = 20,028.12 × 5,460.16
  4. Step 4: Simplify right side
    13,362.56x = 109,356,739.70
  5. Step 5: Solve for x
    x = 109,356,739.70/13,362.56
  6. Step 6: Final answer
    x = 8,183.82

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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.