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Finding the Fourth Proportional to 415,029.20, 622,620.60 and 134,555.60

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Solution

The fourth proportional to 415,029.20, 622,620.60 and 134,555.60 is: 201,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,029.20 : 622,620.60 = 134,555.60 : x
  2. Step 2: Convert to fraction form
    415,029.20/622,620.60 = 134,555.60/x
  3. Step 3: Cross multiply
    415,029.20x = 622,620.60 × 134,555.60
  4. Step 4: Simplify right side
    415,029.20x = 83,777,088,405.36
  5. Step 5: Solve for x
    x = 83,777,088,405.36/415,029.20
  6. Step 6: Final answer
    x = 201,858.30

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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.