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Finding the Fourth Proportional to 142,706.00, 196,918.39 and 79,027.85

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Solution

The fourth proportional to 142,706.00, 196,918.39 and 79,027.85 is: 109,049.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,706.00 : 196,918.39 = 79,027.85 : x
  2. Step 2: Convert to fraction form
    142,706.00/196,918.39 = 79,027.85/x
  3. Step 3: Cross multiply
    142,706.00x = 196,918.39 × 79,027.85
  4. Step 4: Simplify right side
    142,706.00x = 15,562,037,578.24
  5. Step 5: Solve for x
    x = 15,562,037,578.24/142,706.00
  6. Step 6: Final answer
    x = 109,049.64

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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.