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Finding the Fourth Proportional to 321,778.56, 482,696.21 and 119,377.01

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Solution

The fourth proportional to 321,778.56, 482,696.21 and 119,377.01 is: 179,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,778.56 : 482,696.21 = 119,377.01 : x
  2. Step 2: Convert to fraction form
    321,778.56/482,696.21 = 119,377.01/x
  3. Step 3: Cross multiply
    321,778.56x = 482,696.21 × 119,377.01
  4. Step 4: Simplify right side
    321,778.56x = 57,622,830,288.13
  5. Step 5: Solve for x
    x = 57,622,830,288.13/321,778.56
  6. Step 6: Final answer
    x = 179,076.04

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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.