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Finding the Fourth Proportional to 68,877.81, 103,316.72 and 27,324.81

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Solution

The fourth proportional to 68,877.81, 103,316.72 and 27,324.81 is: 40,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,877.81 : 103,316.72 = 27,324.81 : x
  2. Step 2: Convert to fraction form
    68,877.81/103,316.72 = 27,324.81/x
  3. Step 3: Cross multiply
    68,877.81x = 103,316.72 × 27,324.81
  4. Step 4: Simplify right side
    68,877.81x = 2,823,109,743.82
  5. Step 5: Solve for x
    x = 2,823,109,743.82/68,877.81
  6. Step 6: Final answer
    x = 40,987.22

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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.