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Finding the Fourth Proportional to 415,461.20, 622,270.20 and 166,014.80

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Solution

The fourth proportional to 415,461.20, 622,270.20 and 166,014.80 is: 248,653.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,461.20 : 622,270.20 = 166,014.80 : x
  2. Step 2: Convert to fraction form
    415,461.20/622,270.20 = 166,014.80/x
  3. Step 3: Cross multiply
    415,461.20x = 622,270.20 × 166,014.80
  4. Step 4: Simplify right side
    415,461.20x = 103,306,062,798.96
  5. Step 5: Solve for x
    x = 103,306,062,798.96/415,461.20
  6. Step 6: Final answer
    x = 248,653.94

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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.