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Finding the Fourth Proportional to 18,616.51, 27,928.87 and 6,136.03

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Solution

The fourth proportional to 18,616.51, 27,928.87 and 6,136.03 is: 9,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.51 : 27,928.87 = 6,136.03 : x
  2. Step 2: Convert to fraction form
    18,616.51/27,928.87 = 6,136.03/x
  3. Step 3: Cross multiply
    18,616.51x = 27,928.87 × 6,136.03
  4. Step 4: Simplify right side
    18,616.51x = 171,372,384.19
  5. Step 5: Solve for x
    x = 171,372,384.19/18,616.51
  6. Step 6: Final answer
    x = 9,205.40

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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.