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Finding the Fourth Proportional to 193,603.20, 290,404.80 and 53,361.60

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Solution

The fourth proportional to 193,603.20, 290,404.80 and 53,361.60 is: 80,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,603.20 : 290,404.80 = 53,361.60 : x
  2. Step 2: Convert to fraction form
    193,603.20/290,404.80 = 53,361.60/x
  3. Step 3: Cross multiply
    193,603.20x = 290,404.80 × 53,361.60
  4. Step 4: Simplify right side
    193,603.20x = 15,496,464,775.68
  5. Step 5: Solve for x
    x = 15,496,464,775.68/193,603.20
  6. Step 6: Final answer
    x = 80,042.40

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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.