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Finding the Fourth Proportional to 624,694.70, 863,531.44 and 557,378.84

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Solution

The fourth proportional to 624,694.70, 863,531.44 and 557,378.84 is: 770,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,694.70 : 863,531.44 = 557,378.84 : x
  2. Step 2: Convert to fraction form
    624,694.70/863,531.44 = 557,378.84/x
  3. Step 3: Cross multiply
    624,694.70x = 863,531.44 × 557,378.84
  4. Step 4: Simplify right side
    624,694.70x = 481,314,152,330.73
  5. Step 5: Solve for x
    x = 481,314,152,330.73/624,694.70
  6. Step 6: Final answer
    x = 770,479.01

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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.