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Finding the Fourth Proportional to 192,028.80, 288,043.20 and 165,763.20

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Solution

The fourth proportional to 192,028.80, 288,043.20 and 165,763.20 is: 248,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,028.80 : 288,043.20 = 165,763.20 : x
  2. Step 2: Convert to fraction form
    192,028.80/288,043.20 = 165,763.20/x
  3. Step 3: Cross multiply
    192,028.80x = 288,043.20 × 165,763.20
  4. Step 4: Simplify right side
    192,028.80x = 47,746,962,570.24
  5. Step 5: Solve for x
    x = 47,746,962,570.24/192,028.80
  6. Step 6: Final answer
    x = 248,644.80

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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.