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Finding the Fourth Proportional to 14,361.81, 21,540.28 and 3,971.13

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Solution

The fourth proportional to 14,361.81, 21,540.28 and 3,971.13 is: 5,956.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.81 : 21,540.28 = 3,971.13 : x
  2. Step 2: Convert to fraction form
    14,361.81/21,540.28 = 3,971.13/x
  3. Step 3: Cross multiply
    14,361.81x = 21,540.28 × 3,971.13
  4. Step 4: Simplify right side
    14,361.81x = 85,539,252.12
  5. Step 5: Solve for x
    x = 85,539,252.12/14,361.81
  6. Step 6: Final answer
    x = 5,956.02

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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.