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Finding the Fourth Proportional to 361,015.68, 541,606.59 and 121,161.42

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Solution

The fourth proportional to 361,015.68, 541,606.59 and 121,161.42 is: 181,770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,015.68 : 541,606.59 = 121,161.42 : x
  2. Step 2: Convert to fraction form
    361,015.68/541,606.59 = 121,161.42/x
  3. Step 3: Cross multiply
    361,015.68x = 541,606.59 × 121,161.42
  4. Step 4: Simplify right side
    361,015.68x = 65,621,823,525.76
  5. Step 5: Solve for x
    x = 65,621,823,525.76/361,015.68
  6. Step 6: Final answer
    x = 181,770.01

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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.