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Finding the Fourth Proportional to 69,172.65, 103,692.56 and 44,142.03

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Solution

The fourth proportional to 69,172.65, 103,692.56 and 44,142.03 is: 66,170.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,172.65 : 103,692.56 = 44,142.03 : x
  2. Step 2: Convert to fraction form
    69,172.65/103,692.56 = 44,142.03/x
  3. Step 3: Cross multiply
    69,172.65x = 103,692.56 × 44,142.03
  4. Step 4: Simplify right side
    69,172.65x = 4,577,199,873.59
  5. Step 5: Solve for x
    x = 4,577,199,873.59/69,172.65
  6. Step 6: Final answer
    x = 66,170.66

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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.