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Finding the Fourth Proportional to 351,661.56, 485,292.36 and 190,520.70

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Solution

The fourth proportional to 351,661.56, 485,292.36 and 190,520.70 is: 262,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,661.56 : 485,292.36 = 190,520.70 : x
  2. Step 2: Convert to fraction form
    351,661.56/485,292.36 = 190,520.70/x
  3. Step 3: Cross multiply
    351,661.56x = 485,292.36 × 190,520.70
  4. Step 4: Simplify right side
    351,661.56x = 92,458,240,131.85
  5. Step 5: Solve for x
    x = 92,458,240,131.85/351,661.56
  6. Step 6: Final answer
    x = 262,918.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.