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Finding the Fourth Proportional to 70,791.87, 97,693.48 and 38,961.51

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Solution

The fourth proportional to 70,791.87, 97,693.48 and 38,961.51 is: 53,767.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,791.87 : 97,693.48 = 38,961.51 : x
  2. Step 2: Convert to fraction form
    70,791.87/97,693.48 = 38,961.51/x
  3. Step 3: Cross multiply
    70,791.87x = 97,693.48 × 38,961.51
  4. Step 4: Simplify right side
    70,791.87x = 3,806,284,961.15
  5. Step 5: Solve for x
    x = 3,806,284,961.15/70,791.87
  6. Step 6: Final answer
    x = 53,767.26

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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.