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Finding the Fourth Proportional to 311,957.75, 468,143.99 and 114,965.75

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Solution

The fourth proportional to 311,957.75, 468,143.99 and 114,965.75 is: 172,525.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,957.75 : 468,143.99 = 114,965.75 : x
  2. Step 2: Convert to fraction form
    311,957.75/468,143.99 = 114,965.75/x
  3. Step 3: Cross multiply
    311,957.75x = 468,143.99 × 114,965.75
  4. Step 4: Simplify right side
    311,957.75x = 53,820,524,918.34
  5. Step 5: Solve for x
    x = 53,820,524,918.34/311,957.75
  6. Step 6: Final answer
    x = 172,525.05

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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.