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Finding the Fourth Proportional to 107,469.80, 161,147.10 and 45,069.80

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Solution

The fourth proportional to 107,469.80, 161,147.10 and 45,069.80 is: 67,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,469.80 : 161,147.10 = 45,069.80 : x
  2. Step 2: Convert to fraction form
    107,469.80/161,147.10 = 45,069.80/x
  3. Step 3: Cross multiply
    107,469.80x = 161,147.10 × 45,069.80
  4. Step 4: Simplify right side
    107,469.80x = 7,262,867,567.58
  5. Step 5: Solve for x
    x = 7,262,867,567.58/107,469.80
  6. Step 6: Final answer
    x = 67,580.54

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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.