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Finding the Fourth Proportional to 76,197.44, 105,143.48 and 43,931.70

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Solution

The fourth proportional to 76,197.44, 105,143.48 and 43,931.70 is: 60,620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,197.44 : 105,143.48 = 43,931.70 : x
  2. Step 2: Convert to fraction form
    76,197.44/105,143.48 = 43,931.70/x
  3. Step 3: Cross multiply
    76,197.44x = 105,143.48 × 43,931.70
  4. Step 4: Simplify right side
    76,197.44x = 4,619,131,074.94
  5. Step 5: Solve for x
    x = 4,619,131,074.94/76,197.44
  6. Step 6: Final answer
    x = 60,620.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.