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Finding the Fourth Proportional to 71,723.15, 107,512.07 and 36,076.76

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Solution

The fourth proportional to 71,723.15, 107,512.07 and 36,076.76 is: 54,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,723.15 : 107,512.07 = 36,076.76 : x
  2. Step 2: Convert to fraction form
    71,723.15/107,512.07 = 36,076.76/x
  3. Step 3: Cross multiply
    71,723.15x = 107,512.07 × 36,076.76
  4. Step 4: Simplify right side
    71,723.15x = 3,878,686,428.55
  5. Step 5: Solve for x
    x = 3,878,686,428.55/71,723.15
  6. Step 6: Final answer
    x = 54,078.59

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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.