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Finding the Fourth Proportional to 70,218.44, 105,278.46 and 25,839.43

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Solution

The fourth proportional to 70,218.44, 105,278.46 and 25,839.43 is: 38,741.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,218.44 : 105,278.46 = 25,839.43 : x
  2. Step 2: Convert to fraction form
    70,218.44/105,278.46 = 25,839.43/x
  3. Step 3: Cross multiply
    70,218.44x = 105,278.46 × 25,839.43
  4. Step 4: Simplify right side
    70,218.44x = 2,720,335,406.35
  5. Step 5: Solve for x
    x = 2,720,335,406.35/70,218.44
  6. Step 6: Final answer
    x = 38,741.04

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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.