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Finding the Fourth Proportional to 605,712.40, 908,568.60 and 419,088.40

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Solution

The fourth proportional to 605,712.40, 908,568.60 and 419,088.40 is: 628,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,712.40 : 908,568.60 = 419,088.40 : x
  2. Step 2: Convert to fraction form
    605,712.40/908,568.60 = 419,088.40/x
  3. Step 3: Cross multiply
    605,712.40x = 908,568.60 × 419,088.40
  4. Step 4: Simplify right side
    605,712.40x = 380,770,560,864.24
  5. Step 5: Solve for x
    x = 380,770,560,864.24/605,712.40
  6. Step 6: Final answer
    x = 628,632.60

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Similar ratio
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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.