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Finding the Fourth Proportional to 70,753.26, 97,638.78 and 38,922.21

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Solution

The fourth proportional to 70,753.26, 97,638.78 and 38,922.21 is: 53,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,753.26 : 97,638.78 = 38,922.21 : x
  2. Step 2: Convert to fraction form
    70,753.26/97,638.78 = 38,922.21/x
  3. Step 3: Cross multiply
    70,753.26x = 97,638.78 × 38,922.21
  4. Step 4: Simplify right side
    70,753.26x = 3,800,317,099.30
  5. Step 5: Solve for x
    x = 3,800,317,099.30/70,753.26
  6. Step 6: Final answer
    x = 53,712.25

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