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Finding the Fourth Proportional to 18,607.61, 27,913.16 and 6,122.54

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Solution

The fourth proportional to 18,607.61, 27,913.16 and 6,122.54 is: 9,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.61 : 27,913.16 = 6,122.54 : x
  2. Step 2: Convert to fraction form
    18,607.61/27,913.16 = 6,122.54/x
  3. Step 3: Cross multiply
    18,607.61x = 27,913.16 × 6,122.54
  4. Step 4: Simplify right side
    18,607.61x = 170,899,299.06
  5. Step 5: Solve for x
    x = 170,899,299.06/18,607.61
  6. Step 6: Final answer
    x = 9,184.38

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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.