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Finding the Fourth Proportional to 74,692.43, 103,074.22 and 40,701.21

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Solution

The fourth proportional to 74,692.43, 103,074.22 and 40,701.21 is: 56,166.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,692.43 : 103,074.22 = 40,701.21 : x
  2. Step 2: Convert to fraction form
    74,692.43/103,074.22 = 40,701.21/x
  3. Step 3: Cross multiply
    74,692.43x = 103,074.22 × 40,701.21
  4. Step 4: Simplify right side
    74,692.43x = 4,195,245,428.05
  5. Step 5: Solve for x
    x = 4,195,245,428.05/74,692.43
  6. Step 6: Final answer
    x = 56,166.94

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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.