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Finding the Fourth Proportional to 5,226.16, 7,212.16 and 2,868.56

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Solution

The fourth proportional to 5,226.16, 7,212.16 and 2,868.56 is: 3,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226.16 : 7,212.16 = 2,868.56 : x
  2. Step 2: Convert to fraction form
    5,226.16/7,212.16 = 2,868.56/x
  3. Step 3: Cross multiply
    5,226.16x = 7,212.16 × 2,868.56
  4. Step 4: Simplify right side
    5,226.16x = 20,688,513.69
  5. Step 5: Solve for x
    x = 20,688,513.69/5,226.16
  6. Step 6: Final answer
    x = 3,958.65

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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.