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Finding the Fourth Proportional to 119,263.71, 178,868.22 and 71,245.85

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Solution

The fourth proportional to 119,263.71, 178,868.22 and 71,245.85 is: 106,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,263.71 : 178,868.22 = 71,245.85 : x
  2. Step 2: Convert to fraction form
    119,263.71/178,868.22 = 71,245.85/x
  3. Step 3: Cross multiply
    119,263.71x = 178,868.22 × 71,245.85
  4. Step 4: Simplify right side
    119,263.71x = 12,743,617,210.37
  5. Step 5: Solve for x
    x = 12,743,617,210.37/119,263.71
  6. Step 6: Final answer
    x = 106,852.43

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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.