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Finding the Fourth Proportional to 12,361.28, 18,536.28 and 5,337.98

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Solution

The fourth proportional to 12,361.28, 18,536.28 and 5,337.98 is: 8,004.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.28 : 18,536.28 = 5,337.98 : x
  2. Step 2: Convert to fraction form
    12,361.28/18,536.28 = 5,337.98/x
  3. Step 3: Cross multiply
    12,361.28x = 18,536.28 × 5,337.98
  4. Step 4: Simplify right side
    12,361.28x = 98,946,291.91
  5. Step 5: Solve for x
    x = 98,946,291.91/12,361.28
  6. Step 6: Final answer
    x = 8,004.53

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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.