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Finding the Fourth Proportional to 68,769.70, 103,088.64 and 43,732.24

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Solution

The fourth proportional to 68,769.70, 103,088.64 and 43,732.24 is: 65,556.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,769.70 : 103,088.64 = 43,732.24 : x
  2. Step 2: Convert to fraction form
    68,769.70/103,088.64 = 43,732.24/x
  3. Step 3: Cross multiply
    68,769.70x = 103,088.64 × 43,732.24
  4. Step 4: Simplify right side
    68,769.70x = 4,508,297,145.75
  5. Step 5: Solve for x
    x = 4,508,297,145.75/68,769.70
  6. Step 6: Final answer
    x = 65,556.45

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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.