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Finding the Fourth Proportional to 104,661.60, 156,943.80 and 45,466.80

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Solution

The fourth proportional to 104,661.60, 156,943.80 and 45,466.80 is: 68,179.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,661.60 : 156,943.80 = 45,466.80 : x
  2. Step 2: Convert to fraction form
    104,661.60/156,943.80 = 45,466.80/x
  3. Step 3: Cross multiply
    104,661.60x = 156,943.80 × 45,466.80
  4. Step 4: Simplify right side
    104,661.60x = 7,135,732,365.84
  5. Step 5: Solve for x
    x = 7,135,732,365.84/104,661.60
  6. Step 6: Final answer
    x = 68,179.09

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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.