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Finding the Fourth Proportional to 70,790.60, 97,687.48 and 38,958.68

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Solution

The fourth proportional to 70,790.60, 97,687.48 and 38,958.68 is: 53,761.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,790.60 : 97,687.48 = 38,958.68 : x
  2. Step 2: Convert to fraction form
    70,790.60/97,687.48 = 38,958.68/x
  3. Step 3: Cross multiply
    70,790.60x = 97,687.48 × 38,958.68
  4. Step 4: Simplify right side
    70,790.60x = 3,805,775,273.33
  5. Step 5: Solve for x
    x = 3,805,775,273.33/70,790.60
  6. Step 6: Final answer
    x = 53,761.03

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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.