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Finding the Fourth Proportional to 19,364.82, 26,721.42 and 10,868.02

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Solution

The fourth proportional to 19,364.82, 26,721.42 and 10,868.02 is: 14,996.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.82 : 26,721.42 = 10,868.02 : x
  2. Step 2: Convert to fraction form
    19,364.82/26,721.42 = 10,868.02/x
  3. Step 3: Cross multiply
    19,364.82x = 26,721.42 × 10,868.02
  4. Step 4: Simplify right side
    19,364.82x = 290,409,000.30
  5. Step 5: Solve for x
    x = 290,409,000.30/19,364.82
  6. Step 6: Final answer
    x = 14,996.73

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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.