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Finding the Fourth Proportional to 18,601.50, 25,670.07 and 10,218

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Solution

The fourth proportional to 18,601.50, 25,670.07 and 10,218 is: 14,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.50 : 25,670.07 = 10,218 : x
  2. Step 2: Convert to fraction form
    18,601.50/25,670.07 = 10,218/x
  3. Step 3: Cross multiply
    18,601.50x = 25,670.07 × 10,218
  4. Step 4: Simplify right side
    18,601.50x = 262,296,775.26
  5. Step 5: Solve for x
    x = 262,296,775.26/18,601.50
  6. Step 6: Final answer
    x = 14,100.84

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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.