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Finding the Fourth Proportional to 4,812.32, 7,216.32 and 2,216

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Solution

The fourth proportional to 4,812.32, 7,216.32 and 2,216 is: 3,323.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.32 : 7,216.32 = 2,216 : x
  2. Step 2: Convert to fraction form
    4,812.32/7,216.32 = 2,216/x
  3. Step 3: Cross multiply
    4,812.32x = 7,216.32 × 2,216
  4. Step 4: Simplify right side
    4,812.32x = 15,991,365.12
  5. Step 5: Solve for x
    x = 15,991,365.12/4,812.32
  6. Step 6: Final answer
    x = 3,323.01

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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.