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Finding the Fourth Proportional to 27,136.81, 40,652.22 and 18,701.82

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Solution

The fourth proportional to 27,136.81, 40,652.22 and 18,701.82 is: 28,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,136.81 : 40,652.22 = 18,701.82 : x
  2. Step 2: Convert to fraction form
    27,136.81/40,652.22 = 18,701.82/x
  3. Step 3: Cross multiply
    27,136.81x = 40,652.22 × 18,701.82
  4. Step 4: Simplify right side
    27,136.81x = 760,270,501.04
  5. Step 5: Solve for x
    x = 760,270,501.04/27,136.81
  6. Step 6: Final answer
    x = 28,016.21

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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.