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Finding the Fourth Proportional to 73,163.94, 109,670.58 and 28,772.70

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Solution

The fourth proportional to 73,163.94, 109,670.58 and 28,772.70 is: 43,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,163.94 : 109,670.58 = 28,772.70 : x
  2. Step 2: Convert to fraction form
    73,163.94/109,670.58 = 28,772.70/x
  3. Step 3: Cross multiply
    73,163.94x = 109,670.58 × 28,772.70
  4. Step 4: Simplify right side
    73,163.94x = 3,155,518,697.17
  5. Step 5: Solve for x
    x = 3,155,518,697.17/73,163.94
  6. Step 6: Final answer
    x = 43,129.43

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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.