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Finding the Fourth Proportional to 13,576.46, 18,736.03 and 7,607.91

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Solution

The fourth proportional to 13,576.46, 18,736.03 and 7,607.91 is: 10,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.46 : 18,736.03 = 7,607.91 : x
  2. Step 2: Convert to fraction form
    13,576.46/18,736.03 = 7,607.91/x
  3. Step 3: Cross multiply
    13,576.46x = 18,736.03 × 7,607.91
  4. Step 4: Simplify right side
    13,576.46x = 142,542,030.00
  5. Step 5: Solve for x
    x = 142,542,030.00/13,576.46
  6. Step 6: Final answer
    x = 10,499.20

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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.