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Finding the Fourth Proportional to 92,615.28, 138,922.92 and 33,450.72

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Solution

The fourth proportional to 92,615.28, 138,922.92 and 33,450.72 is: 50,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,615.28 : 138,922.92 = 33,450.72 : x
  2. Step 2: Convert to fraction form
    92,615.28/138,922.92 = 33,450.72/x
  3. Step 3: Cross multiply
    92,615.28x = 138,922.92 × 33,450.72
  4. Step 4: Simplify right side
    92,615.28x = 4,647,071,698.50
  5. Step 5: Solve for x
    x = 4,647,071,698.50/92,615.28
  6. Step 6: Final answer
    x = 50,176.08

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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.