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Finding the Fourth Proportional to 136,809.21, 205,042.50 and 73,473.69

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Solution

The fourth proportional to 136,809.21, 205,042.50 and 73,473.69 is: 110,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,809.21 : 205,042.50 = 73,473.69 : x
  2. Step 2: Convert to fraction form
    136,809.21/205,042.50 = 73,473.69/x
  3. Step 3: Cross multiply
    136,809.21x = 205,042.50 × 73,473.69
  4. Step 4: Simplify right side
    136,809.21x = 15,065,229,850.73
  5. Step 5: Solve for x
    x = 15,065,229,850.73/136,809.21
  6. Step 6: Final answer
    x = 110,118.53

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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.