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Finding the Fourth Proportional to 67,092, 100,641.42 and 17,172.51

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Solution

The fourth proportional to 67,092, 100,641.42 and 17,172.51 is: 25,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,092 : 100,641.42 = 17,172.51 : x
  2. Step 2: Convert to fraction form
    67,092/100,641.42 = 17,172.51/x
  3. Step 3: Cross multiply
    67,092x = 100,641.42 × 17,172.51
  4. Step 4: Simplify right side
    67,092x = 1,728,265,791.36
  5. Step 5: Solve for x
    x = 1,728,265,791.36/67,092
  6. Step 6: Final answer
    x = 25,759.64

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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.