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Finding the Fourth Proportional to 70,092.12, 96,723.74 and 39,874.59

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Solution

The fourth proportional to 70,092.12, 96,723.74 and 39,874.59 is: 55,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,092.12 : 96,723.74 = 39,874.59 : x
  2. Step 2: Convert to fraction form
    70,092.12/96,723.74 = 39,874.59/x
  3. Step 3: Cross multiply
    70,092.12x = 96,723.74 × 39,874.59
  4. Step 4: Simplify right side
    70,092.12x = 3,856,819,276.39
  5. Step 5: Solve for x
    x = 3,856,819,276.39/70,092.12
  6. Step 6: Final answer
    x = 55,025.01

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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.