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Finding the Fourth Proportional to 13,359.92, 18,444 and 8,056

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Solution

The fourth proportional to 13,359.92, 18,444 and 8,056 is: 11,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.92 : 18,444 = 8,056 : x
  2. Step 2: Convert to fraction form
    13,359.92/18,444 = 8,056/x
  3. Step 3: Cross multiply
    13,359.92x = 18,444 × 8,056
  4. Step 4: Simplify right side
    13,359.92x = 148,584,864
  5. Step 5: Solve for x
    x = 148,584,864/13,359.92
  6. Step 6: Final answer
    x = 11,121.69

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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.