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Finding the Fourth Proportional to 446,806.15, 670,209.57 and 126,916.74

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Solution

The fourth proportional to 446,806.15, 670,209.57 and 126,916.74 is: 190,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,806.15 : 670,209.57 = 126,916.74 : x
  2. Step 2: Convert to fraction form
    446,806.15/670,209.57 = 126,916.74/x
  3. Step 3: Cross multiply
    446,806.15x = 670,209.57 × 126,916.74
  4. Step 4: Simplify right side
    446,806.15x = 85,060,810,556.80
  5. Step 5: Solve for x
    x = 85,060,810,556.80/446,806.15
  6. Step 6: Final answer
    x = 190,375.20

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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.