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Finding the Fourth Proportional to 78,037.85, 107,692.60 and 44,047.78

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Solution

The fourth proportional to 78,037.85, 107,692.60 and 44,047.78 is: 60,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,037.85 : 107,692.60 = 44,047.78 : x
  2. Step 2: Convert to fraction form
    78,037.85/107,692.60 = 44,047.78/x
  3. Step 3: Cross multiply
    78,037.85x = 107,692.60 × 44,047.78
  4. Step 4: Simplify right side
    78,037.85x = 4,743,619,952.43
  5. Step 5: Solve for x
    x = 4,743,619,952.43/78,037.85
  6. Step 6: Final answer
    x = 60,786.14

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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.