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Finding the Fourth Proportional to 294,486.80, 441,734.04 and 84,131.60

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Solution

The fourth proportional to 294,486.80, 441,734.04 and 84,131.60 is: 126,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,486.80 : 441,734.04 = 84,131.60 : x
  2. Step 2: Convert to fraction form
    294,486.80/441,734.04 = 84,131.60/x
  3. Step 3: Cross multiply
    294,486.80x = 441,734.04 × 84,131.60
  4. Step 4: Simplify right side
    294,486.80x = 37,163,791,559.66
  5. Step 5: Solve for x
    x = 37,163,791,559.66/294,486.80
  6. Step 6: Final answer
    x = 126,198.50

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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.