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Finding the Fourth Proportional to 351,653.06, 485,280.63 and 190,512.20

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Solution

The fourth proportional to 351,653.06, 485,280.63 and 190,512.20 is: 262,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,653.06 : 485,280.63 = 190,512.20 : x
  2. Step 2: Convert to fraction form
    351,653.06/485,280.63 = 190,512.20/x
  3. Step 3: Cross multiply
    351,653.06x = 485,280.63 × 190,512.20
  4. Step 4: Simplify right side
    351,653.06x = 92,451,878,012.28
  5. Step 5: Solve for x
    x = 92,451,878,012.28/351,653.06
  6. Step 6: Final answer
    x = 262,906.51

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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.