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Finding the Fourth Proportional to 45,757.80, 68,636.70 and 44,008.20

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Solution

The fourth proportional to 45,757.80, 68,636.70 and 44,008.20 is: 66,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,757.80 : 68,636.70 = 44,008.20 : x
  2. Step 2: Convert to fraction form
    45,757.80/68,636.70 = 44,008.20/x
  3. Step 3: Cross multiply
    45,757.80x = 68,636.70 × 44,008.20
  4. Step 4: Simplify right side
    45,757.80x = 3,020,577,620.94
  5. Step 5: Solve for x
    x = 3,020,577,620.94/45,757.80
  6. Step 6: Final answer
    x = 66,012.30

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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.