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Finding the Fourth Proportional to 70,609.26, 105,891.42 and 23,213.40

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Solution

The fourth proportional to 70,609.26, 105,891.42 and 23,213.40 is: 34,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,609.26 : 105,891.42 = 23,213.40 : x
  2. Step 2: Convert to fraction form
    70,609.26/105,891.42 = 23,213.40/x
  3. Step 3: Cross multiply
    70,609.26x = 105,891.42 × 23,213.40
  4. Step 4: Simplify right side
    70,609.26x = 2,458,099,889.03
  5. Step 5: Solve for x
    x = 2,458,099,889.03/70,609.26
  6. Step 6: Final answer
    x = 34,812.71

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1.5x scale

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.