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Finding the Fourth Proportional to 146,803.20, 220,291.20 and 53,296.80

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Solution

The fourth proportional to 146,803.20, 220,291.20 and 53,296.80 is: 79,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,803.20 : 220,291.20 = 53,296.80 : x
  2. Step 2: Convert to fraction form
    146,803.20/220,291.20 = 53,296.80/x
  3. Step 3: Cross multiply
    146,803.20x = 220,291.20 × 53,296.80
  4. Step 4: Simplify right side
    146,803.20x = 11,740,816,028.16
  5. Step 5: Solve for x
    x = 11,740,816,028.16/146,803.20
  6. Step 6: Final answer
    x = 79,976.57

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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.