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Finding the Fourth Proportional to 617,816.70, 926,811.45 and 262,827.90

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Solution

The fourth proportional to 617,816.70, 926,811.45 and 262,827.90 is: 394,278.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,816.70 : 926,811.45 = 262,827.90 : x
  2. Step 2: Convert to fraction form
    617,816.70/926,811.45 = 262,827.90/x
  3. Step 3: Cross multiply
    617,816.70x = 926,811.45 × 262,827.90
  4. Step 4: Simplify right side
    617,816.70x = 243,591,907,099.46
  5. Step 5: Solve for x
    x = 243,591,907,099.46/617,816.70
  6. Step 6: Final answer
    x = 394,278.61

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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.