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Finding the Fourth Proportional to 146,719.20, 220,078.80 and 106,867.20

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Solution

The fourth proportional to 146,719.20, 220,078.80 and 106,867.20 is: 160,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,719.20 : 220,078.80 = 106,867.20 : x
  2. Step 2: Convert to fraction form
    146,719.20/220,078.80 = 106,867.20/x
  3. Step 3: Cross multiply
    146,719.20x = 220,078.80 × 106,867.20
  4. Step 4: Simplify right side
    146,719.20x = 23,519,205,135.36
  5. Step 5: Solve for x
    x = 23,519,205,135.36/146,719.20
  6. Step 6: Final answer
    x = 160,300.80

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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.