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Finding the Fourth Proportional to 68,928.42, 103,315.13 and 35,099.52

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Solution

The fourth proportional to 68,928.42, 103,315.13 and 35,099.52 is: 52,609.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,928.42 : 103,315.13 = 35,099.52 : x
  2. Step 2: Convert to fraction form
    68,928.42/103,315.13 = 35,099.52/x
  3. Step 3: Cross multiply
    68,928.42x = 103,315.13 × 35,099.52
  4. Step 4: Simplify right side
    68,928.42x = 3,626,311,040.43
  5. Step 5: Solve for x
    x = 3,626,311,040.43/68,928.42
  6. Step 6: Final answer
    x = 52,609.81

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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.