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Finding the Fourth Proportional to 71,935.80, 107,903.70 and 47,052.60

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Solution

The fourth proportional to 71,935.80, 107,903.70 and 47,052.60 is: 70,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,935.80 : 107,903.70 = 47,052.60 : x
  2. Step 2: Convert to fraction form
    71,935.80/107,903.70 = 47,052.60/x
  3. Step 3: Cross multiply
    71,935.80x = 107,903.70 × 47,052.60
  4. Step 4: Simplify right side
    71,935.80x = 5,077,149,634.62
  5. Step 5: Solve for x
    x = 5,077,149,634.62/71,935.80
  6. Step 6: Final answer
    x = 70,578.90

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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.