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Finding the Fourth Proportional to 51,395.66, 77,163.42 and 28,922.21

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Solution

The fourth proportional to 51,395.66, 77,163.42 and 28,922.21 is: 43,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,395.66 : 77,163.42 = 28,922.21 : x
  2. Step 2: Convert to fraction form
    51,395.66/77,163.42 = 28,922.21/x
  3. Step 3: Cross multiply
    51,395.66x = 77,163.42 × 28,922.21
  4. Step 4: Simplify right side
    51,395.66x = 2,231,736,709.86
  5. Step 5: Solve for x
    x = 2,231,736,709.86/51,395.66
  6. Step 6: Final answer
    x = 43,422.67

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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.