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Finding the Fourth Proportional to 19,696.86, 27,161.01 and 12,973.89

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Solution

The fourth proportional to 19,696.86, 27,161.01 and 12,973.89 is: 17,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,696.86 : 27,161.01 = 12,973.89 : x
  2. Step 2: Convert to fraction form
    19,696.86/27,161.01 = 12,973.89/x
  3. Step 3: Cross multiply
    19,696.86x = 27,161.01 × 12,973.89
  4. Step 4: Simplify right side
    19,696.86x = 352,383,956.03
  5. Step 5: Solve for x
    x = 352,383,956.03/19,696.86
  6. Step 6: Final answer
    x = 17,890.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.