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Finding the Fourth Proportional to 287,694.39, 396,832.98 and 190,896.15

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Solution

The fourth proportional to 287,694.39, 396,832.98 and 190,896.15 is: 263,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,694.39 : 396,832.98 = 190,896.15 : x
  2. Step 2: Convert to fraction form
    287,694.39/396,832.98 = 190,896.15/x
  3. Step 3: Cross multiply
    287,694.39x = 396,832.98 × 190,896.15
  4. Step 4: Simplify right side
    287,694.39x = 75,753,888,075.03
  5. Step 5: Solve for x
    x = 75,753,888,075.03/287,694.39
  6. Step 6: Final answer
    x = 263,313.75

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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.