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Finding the Fourth Proportional to 23,418.84, 35,109.80 and 8,619.68

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Solution

The fourth proportional to 23,418.84, 35,109.80 and 8,619.68 is: 12,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,418.84 : 35,109.80 = 8,619.68 : x
  2. Step 2: Convert to fraction form
    23,418.84/35,109.80 = 8,619.68/x
  3. Step 3: Cross multiply
    23,418.84x = 35,109.80 × 8,619.68
  4. Step 4: Simplify right side
    23,418.84x = 302,635,366.35
  5. Step 5: Solve for x
    x = 302,635,366.35/23,418.84
  6. Step 6: Final answer
    x = 12,922.73

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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.