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Finding the Fourth Proportional to 70,391.26, 97,139.96 and 38,561.30

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Solution

The fourth proportional to 70,391.26, 97,139.96 and 38,561.30 is: 53,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,391.26 : 97,139.96 = 38,561.30 : x
  2. Step 2: Convert to fraction form
    70,391.26/97,139.96 = 38,561.30/x
  3. Step 3: Cross multiply
    70,391.26x = 97,139.96 × 38,561.30
  4. Step 4: Simplify right side
    70,391.26x = 3,745,843,139.55
  5. Step 5: Solve for x
    x = 3,745,843,139.55/70,391.26
  6. Step 6: Final answer
    x = 53,214.61

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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.