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Finding the Fourth Proportional to 17,661.12, 26,479.44 and 14,905.68

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Solution

The fourth proportional to 17,661.12, 26,479.44 and 14,905.68 is: 22,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,661.12 : 26,479.44 = 14,905.68 : x
  2. Step 2: Convert to fraction form
    17,661.12/26,479.44 = 14,905.68/x
  3. Step 3: Cross multiply
    17,661.12x = 26,479.44 × 14,905.68
  4. Step 4: Simplify right side
    17,661.12x = 394,694,059.22
  5. Step 5: Solve for x
    x = 394,694,059.22/17,661.12
  6. Step 6: Final answer
    x = 22,348.19

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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.