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Finding the Fourth Proportional to 419,243.40, 578,546.80 and 244,843.61

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Solution

The fourth proportional to 419,243.40, 578,546.80 and 244,843.61 is: 337,878.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,243.40 : 578,546.80 = 244,843.61 : x
  2. Step 2: Convert to fraction form
    419,243.40/578,546.80 = 244,843.61/x
  3. Step 3: Cross multiply
    419,243.40x = 578,546.80 × 244,843.61
  4. Step 4: Simplify right side
    419,243.40x = 141,653,487,065.95
  5. Step 5: Solve for x
    x = 141,653,487,065.95/419,243.40
  6. Step 6: Final answer
    x = 337,878.87

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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.