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Finding the Fourth Proportional to 434,399.21, 651,627.98 and 118,858.85

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Solution

The fourth proportional to 434,399.21, 651,627.98 and 118,858.85 is: 178,296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,399.21 : 651,627.98 = 118,858.85 : x
  2. Step 2: Convert to fraction form
    434,399.21/651,627.98 = 118,858.85/x
  3. Step 3: Cross multiply
    434,399.21x = 651,627.98 × 118,858.85
  4. Step 4: Simplify right side
    434,399.21x = 77,451,751,736.33
  5. Step 5: Solve for x
    x = 77,451,751,736.33/434,399.21
  6. Step 6: Final answer
    x = 178,296.25

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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.