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Finding the Fourth Proportional to 694,639.80, 1,041,978 and 189,205.08

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Solution

The fourth proportional to 694,639.80, 1,041,978 and 189,205.08 is: 283,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,639.80 : 1,041,978 = 189,205.08 : x
  2. Step 2: Convert to fraction form
    694,639.80/1,041,978 = 189,205.08/x
  3. Step 3: Cross multiply
    694,639.80x = 1,041,978 × 189,205.08
  4. Step 4: Simplify right side
    694,639.80x = 197,147,530,848.24
  5. Step 5: Solve for x
    x = 197,147,530,848.24/694,639.80
  6. Step 6: Final answer
    x = 283,812.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.