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Finding the Fourth Proportional to 70,992.07, 97,971.11 and 39,163.02

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Solution

The fourth proportional to 70,992.07, 97,971.11 and 39,163.02 is: 54,046.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,992.07 : 97,971.11 = 39,163.02 : x
  2. Step 2: Convert to fraction form
    70,992.07/97,971.11 = 39,163.02/x
  3. Step 3: Cross multiply
    70,992.07x = 97,971.11 × 39,163.02
  4. Step 4: Simplify right side
    70,992.07x = 3,836,844,344.48
  5. Step 5: Solve for x
    x = 3,836,844,344.48/70,992.07
  6. Step 6: Final answer
    x = 54,046.10

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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.