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Finding the Fourth Proportional to 71,469.60, 107,029.44 and 50,357.76

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Solution

The fourth proportional to 71,469.60, 107,029.44 and 50,357.76 is: 75,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,469.60 : 107,029.44 = 50,357.76 : x
  2. Step 2: Convert to fraction form
    71,469.60/107,029.44 = 50,357.76/x
  3. Step 3: Cross multiply
    71,469.60x = 107,029.44 × 50,357.76
  4. Step 4: Simplify right side
    71,469.60x = 5,389,762,852.45
  5. Step 5: Solve for x
    x = 5,389,762,852.45/71,469.60
  6. Step 6: Final answer
    x = 75,413.36

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1.5x scale

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.