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Finding the Fourth Proportional to 19,634.81, 27,102.70 and 12,081.45

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Solution

The fourth proportional to 19,634.81, 27,102.70 and 12,081.45 is: 16,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,634.81 : 27,102.70 = 12,081.45 : x
  2. Step 2: Convert to fraction form
    19,634.81/27,102.70 = 12,081.45/x
  3. Step 3: Cross multiply
    19,634.81x = 27,102.70 × 12,081.45
  4. Step 4: Simplify right side
    19,634.81x = 327,440,031.65
  5. Step 5: Solve for x
    x = 327,440,031.65/19,634.81
  6. Step 6: Final answer
    x = 16,676.51

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