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Finding the Fourth Proportional to 415,092.40, 622,638.60 and 273,374.80

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Solution

The fourth proportional to 415,092.40, 622,638.60 and 273,374.80 is: 410,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,092.40 : 622,638.60 = 273,374.80 : x
  2. Step 2: Convert to fraction form
    415,092.40/622,638.60 = 273,374.80/x
  3. Step 3: Cross multiply
    415,092.40x = 622,638.60 × 273,374.80
  4. Step 4: Simplify right side
    415,092.40x = 170,213,702,747.28
  5. Step 5: Solve for x
    x = 170,213,702,747.28/415,092.40
  6. Step 6: Final answer
    x = 410,062.20

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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.