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Finding the Fourth Proportional to 70,327.82, 105,480.36 and 25,975.46

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Solution

The fourth proportional to 70,327.82, 105,480.36 and 25,975.46 is: 38,958.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,327.82 : 105,480.36 = 25,975.46 : x
  2. Step 2: Convert to fraction form
    70,327.82/105,480.36 = 25,975.46/x
  3. Step 3: Cross multiply
    70,327.82x = 105,480.36 × 25,975.46
  4. Step 4: Simplify right side
    70,327.82x = 2,739,901,135.67
  5. Step 5: Solve for x
    x = 2,739,901,135.67/70,327.82
  6. Step 6: Final answer
    x = 38,958.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.