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Finding the Fourth Proportional to 7,361.12, 11,040 and 4,440.24

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Solution

The fourth proportional to 7,361.12, 11,040 and 4,440.24 is: 6,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,361.12 : 11,040 = 4,440.24 : x
  2. Step 2: Convert to fraction form
    7,361.12/11,040 = 4,440.24/x
  3. Step 3: Cross multiply
    7,361.12x = 11,040 × 4,440.24
  4. Step 4: Simplify right side
    7,361.12x = 49,020,249.60
  5. Step 5: Solve for x
    x = 49,020,249.60/7,361.12
  6. Step 6: Final answer
    x = 6,659.35

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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.