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Finding the Fourth Proportional to 270,644.20, 405,927.90 and 83,674.60

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Solution

The fourth proportional to 270,644.20, 405,927.90 and 83,674.60 is: 125,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,644.20 : 405,927.90 = 83,674.60 : x
  2. Step 2: Convert to fraction form
    270,644.20/405,927.90 = 83,674.60/x
  3. Step 3: Cross multiply
    270,644.20x = 405,927.90 × 83,674.60
  4. Step 4: Simplify right side
    270,644.20x = 33,965,854,661.34
  5. Step 5: Solve for x
    x = 33,965,854,661.34/270,644.20
  6. Step 6: Final answer
    x = 125,500.03

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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.