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Finding the Fourth Proportional to 263,949.80, 395,924.70 and 260,013.20

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Solution

The fourth proportional to 263,949.80, 395,924.70 and 260,013.20 is: 390,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,949.80 : 395,924.70 = 260,013.20 : x
  2. Step 2: Convert to fraction form
    263,949.80/395,924.70 = 260,013.20/x
  3. Step 3: Cross multiply
    263,949.80x = 395,924.70 × 260,013.20
  4. Step 4: Simplify right side
    263,949.80x = 102,945,648,206.04
  5. Step 5: Solve for x
    x = 102,945,648,206.04/263,949.80
  6. Step 6: Final answer
    x = 390,019.80

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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.