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Finding the Fourth Proportional to 92,450.50, 138,698.79 and 26,786.50

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Solution

The fourth proportional to 92,450.50, 138,698.79 and 26,786.50 is: 40,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,450.50 : 138,698.79 = 26,786.50 : x
  2. Step 2: Convert to fraction form
    92,450.50/138,698.79 = 26,786.50/x
  3. Step 3: Cross multiply
    92,450.50x = 138,698.79 × 26,786.50
  4. Step 4: Simplify right side
    92,450.50x = 3,715,255,138.34
  5. Step 5: Solve for x
    x = 3,715,255,138.34/92,450.50
  6. Step 6: Final answer
    x = 40,186.43

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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.