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Finding the Fourth Proportional to 67,021.32, 100,531.29 and 17,100.88

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Solution

The fourth proportional to 67,021.32, 100,531.29 and 17,100.88 is: 25,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,021.32 : 100,531.29 = 17,100.88 : x
  2. Step 2: Convert to fraction form
    67,021.32/100,531.29 = 17,100.88/x
  3. Step 3: Cross multiply
    67,021.32x = 100,531.29 × 17,100.88
  4. Step 4: Simplify right side
    67,021.32x = 1,719,173,622.08
  5. Step 5: Solve for x
    x = 1,719,173,622.08/67,021.32
  6. Step 6: Final answer
    x = 25,651.15

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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.