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Finding the Fourth Proportional to 304,329.80, 455,619.90 and 186,231.80

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Solution

The fourth proportional to 304,329.80, 455,619.90 and 186,231.80 is: 278,812.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,329.80 : 455,619.90 = 186,231.80 : x
  2. Step 2: Convert to fraction form
    304,329.80/455,619.90 = 186,231.80/x
  3. Step 3: Cross multiply
    304,329.80x = 455,619.90 × 186,231.80
  4. Step 4: Simplify right side
    304,329.80x = 84,850,914,092.82
  5. Step 5: Solve for x
    x = 84,850,914,092.82/304,329.80
  6. Step 6: Final answer
    x = 278,812.37

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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.