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Finding the Fourth Proportional to 18,558.88, 27,839.94 and 4,707.88

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Solution

The fourth proportional to 18,558.88, 27,839.94 and 4,707.88 is: 7,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.88 : 27,839.94 = 4,707.88 : x
  2. Step 2: Convert to fraction form
    18,558.88/27,839.94 = 4,707.88/x
  3. Step 3: Cross multiply
    18,558.88x = 27,839.94 × 4,707.88
  4. Step 4: Simplify right side
    18,558.88x = 131,066,933.99
  5. Step 5: Solve for x
    x = 131,066,933.99/18,558.88
  6. Step 6: Final answer
    x = 7,062.22

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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.