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Finding the Fourth Proportional to 70,732.79, 106,099.21 and 17,425.80

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Solution

The fourth proportional to 70,732.79, 106,099.21 and 17,425.80 is: 26,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,732.79 : 106,099.21 = 17,425.80 : x
  2. Step 2: Convert to fraction form
    70,732.79/106,099.21 = 17,425.80/x
  3. Step 3: Cross multiply
    70,732.79x = 106,099.21 × 17,425.80
  4. Step 4: Simplify right side
    70,732.79x = 1,848,863,526.49
  5. Step 5: Solve for x
    x = 1,848,863,526.49/70,732.79
  6. Step 6: Final answer
    x = 26,138.71

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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.