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Finding the Fourth Proportional to 18,504.68, 25,536.66 and 10,121

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Solution

The fourth proportional to 18,504.68, 25,536.66 and 10,121 is: 13,967.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,504.68 : 25,536.66 = 10,121 : x
  2. Step 2: Convert to fraction form
    18,504.68/25,536.66 = 10,121/x
  3. Step 3: Cross multiply
    18,504.68x = 25,536.66 × 10,121
  4. Step 4: Simplify right side
    18,504.68x = 258,456,535.86
  5. Step 5: Solve for x
    x = 258,456,535.86/18,504.68
  6. Step 6: Final answer
    x = 13,967.09

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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.