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Finding the Fourth Proportional to 135,176.58, 186,540.38 and 74,745.67

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Solution

The fourth proportional to 135,176.58, 186,540.38 and 74,745.67 is: 103,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,176.58 : 186,540.38 = 74,745.67 : x
  2. Step 2: Convert to fraction form
    135,176.58/186,540.38 = 74,745.67/x
  3. Step 3: Cross multiply
    135,176.58x = 186,540.38 × 74,745.67
  4. Step 4: Simplify right side
    135,176.58x = 13,943,085,685.15
  5. Step 5: Solve for x
    x = 13,943,085,685.15/135,176.58
  6. Step 6: Final answer
    x = 103,147.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.