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Finding the Fourth Proportional to 14,054.43, 21,079.22 and 4,820.43

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Solution

The fourth proportional to 14,054.43, 21,079.22 and 4,820.43 is: 7,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,054.43 : 21,079.22 = 4,820.43 : x
  2. Step 2: Convert to fraction form
    14,054.43/21,079.22 = 4,820.43/x
  3. Step 3: Cross multiply
    14,054.43x = 21,079.22 × 4,820.43
  4. Step 4: Simplify right side
    14,054.43x = 101,610,880.36
  5. Step 5: Solve for x
    x = 101,610,880.36/14,054.43
  6. Step 6: Final answer
    x = 7,229.81

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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.