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Finding the Fourth Proportional to 281,997.59, 389,243.81 and 181,395.59

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Solution

The fourth proportional to 281,997.59, 389,243.81 and 181,395.59 is: 250,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,997.59 : 389,243.81 = 181,395.59 : x
  2. Step 2: Convert to fraction form
    281,997.59/389,243.81 = 181,395.59/x
  3. Step 3: Cross multiply
    281,997.59x = 389,243.81 × 181,395.59
  4. Step 4: Simplify right side
    281,997.59x = 70,607,110,634.93
  5. Step 5: Solve for x
    x = 70,607,110,634.93/281,997.59
  6. Step 6: Final answer
    x = 250,381.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.