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Finding the Fourth Proportional to 321,116.17, 481,515.49 and 188,029.93

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Solution

The fourth proportional to 321,116.17, 481,515.49 and 188,029.93 is: 281,951.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,116.17 : 481,515.49 = 188,029.93 : x
  2. Step 2: Convert to fraction form
    321,116.17/481,515.49 = 188,029.93/x
  3. Step 3: Cross multiply
    321,116.17x = 481,515.49 × 188,029.93
  4. Step 4: Simplify right side
    321,116.17x = 90,539,323,878.62
  5. Step 5: Solve for x
    x = 90,539,323,878.62/321,116.17
  6. Step 6: Final answer
    x = 281,951.93

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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.