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Finding the Fourth Proportional to 26,918.58, 40,378.02 and 9,388.42

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Solution

The fourth proportional to 26,918.58, 40,378.02 and 9,388.42 is: 14,082.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,918.58 : 40,378.02 = 9,388.42 : x
  2. Step 2: Convert to fraction form
    26,918.58/40,378.02 = 9,388.42/x
  3. Step 3: Cross multiply
    26,918.58x = 40,378.02 × 9,388.42
  4. Step 4: Simplify right side
    26,918.58x = 379,085,810.53
  5. Step 5: Solve for x
    x = 379,085,810.53/26,918.58
  6. Step 6: Final answer
    x = 14,082.68

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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.