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Finding the Fourth Proportional to 608,768.20, 913,152.30 and 419,811.40

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Solution

The fourth proportional to 608,768.20, 913,152.30 and 419,811.40 is: 629,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,768.20 : 913,152.30 = 419,811.40 : x
  2. Step 2: Convert to fraction form
    608,768.20/913,152.30 = 419,811.40/x
  3. Step 3: Cross multiply
    608,768.20x = 913,152.30 × 419,811.40
  4. Step 4: Simplify right side
    608,768.20x = 383,351,745,476.22
  5. Step 5: Solve for x
    x = 383,351,745,476.22/608,768.20
  6. Step 6: Final answer
    x = 629,717.10

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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.