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Finding the Fourth Proportional to 193,175.20, 289,762.80 and 99,863.20

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Solution

The fourth proportional to 193,175.20, 289,762.80 and 99,863.20 is: 149,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,175.20 : 289,762.80 = 99,863.20 : x
  2. Step 2: Convert to fraction form
    193,175.20/289,762.80 = 99,863.20/x
  3. Step 3: Cross multiply
    193,175.20x = 289,762.80 × 99,863.20
  4. Step 4: Simplify right side
    193,175.20x = 28,936,640,448.96
  5. Step 5: Solve for x
    x = 28,936,640,448.96/193,175.20
  6. Step 6: Final answer
    x = 149,794.80

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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.