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Finding the Fourth Proportional to 261,995.62, 393,090.73 and 181,991.43

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Solution

The fourth proportional to 261,995.62, 393,090.73 and 181,991.43 is: 273,054.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,995.62 : 393,090.73 = 181,991.43 : x
  2. Step 2: Convert to fraction form
    261,995.62/393,090.73 = 181,991.43/x
  3. Step 3: Cross multiply
    261,995.62x = 393,090.73 × 181,991.43
  4. Step 4: Simplify right side
    261,995.62x = 71,539,144,072.44
  5. Step 5: Solve for x
    x = 71,539,144,072.44/261,995.62
  6. Step 6: Final answer
    x = 273,054.73

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1.5x scale

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.