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Finding the Fourth Proportional to 7,155.36, 10,729.44 and 2,224

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Solution

The fourth proportional to 7,155.36, 10,729.44 and 2,224 is: 3,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.36 : 10,729.44 = 2,224 : x
  2. Step 2: Convert to fraction form
    7,155.36/10,729.44 = 2,224/x
  3. Step 3: Cross multiply
    7,155.36x = 10,729.44 × 2,224
  4. Step 4: Simplify right side
    7,155.36x = 23,862,274.56
  5. Step 5: Solve for x
    x = 23,862,274.56/7,155.36
  6. Step 6: Final answer
    x = 3,334.88

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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.