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Finding the Fourth Proportional to 270,187.98, 405,290.20 and 92,692.47

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Solution

The fourth proportional to 270,187.98, 405,290.20 and 92,692.47 is: 139,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,187.98 : 405,290.20 = 92,692.47 : x
  2. Step 2: Convert to fraction form
    270,187.98/405,290.20 = 92,692.47/x
  3. Step 3: Cross multiply
    270,187.98x = 405,290.20 × 92,692.47
  4. Step 4: Simplify right side
    270,187.98x = 37,567,349,704.79
  5. Step 5: Solve for x
    x = 37,567,349,704.79/270,187.98
  6. Step 6: Final answer
    x = 139,041.53

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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.