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Finding the Fourth Proportional to 356,300.20, 534,450.30 and 190,412.20

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Solution

The fourth proportional to 356,300.20, 534,450.30 and 190,412.20 is: 285,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,300.20 : 534,450.30 = 190,412.20 : x
  2. Step 2: Convert to fraction form
    356,300.20/534,450.30 = 190,412.20/x
  3. Step 3: Cross multiply
    356,300.20x = 534,450.30 × 190,412.20
  4. Step 4: Simplify right side
    356,300.20x = 101,765,857,413.66
  5. Step 5: Solve for x
    x = 101,765,857,413.66/356,300.20
  6. Step 6: Final answer
    x = 285,618.30

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1.5x scale

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.