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Finding the Fourth Proportional to 101,795.12, 152,692.69 and 55,139.12

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Solution

The fourth proportional to 101,795.12, 152,692.69 and 55,139.12 is: 82,708.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,795.12 : 152,692.69 = 55,139.12 : x
  2. Step 2: Convert to fraction form
    101,795.12/152,692.69 = 55,139.12/x
  3. Step 3: Cross multiply
    101,795.12x = 152,692.69 × 55,139.12
  4. Step 4: Simplify right side
    101,795.12x = 8,419,340,800.92
  5. Step 5: Solve for x
    x = 8,419,340,800.92/101,795.12
  6. Step 6: Final answer
    x = 82,708.69

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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.