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Finding the Fourth Proportional to 14,229.81, 21,348.81 and 5,908.28

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Solution

The fourth proportional to 14,229.81, 21,348.81 and 5,908.28 is: 8,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,229.81 : 21,348.81 = 5,908.28 : x
  2. Step 2: Convert to fraction form
    14,229.81/21,348.81 = 5,908.28/x
  3. Step 3: Cross multiply
    14,229.81x = 21,348.81 × 5,908.28
  4. Step 4: Simplify right side
    14,229.81x = 126,134,640.40
  5. Step 5: Solve for x
    x = 126,134,640.40/14,229.81
  6. Step 6: Final answer
    x = 8,864.11

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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.