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Finding the Fourth Proportional to 517,793.70, 714,571.58 and 285,237.50

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Solution

The fourth proportional to 517,793.70, 714,571.58 and 285,237.50 is: 393,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,793.70 : 714,571.58 = 285,237.50 : x
  2. Step 2: Convert to fraction form
    517,793.70/714,571.58 = 285,237.50/x
  3. Step 3: Cross multiply
    517,793.70x = 714,571.58 × 285,237.50
  4. Step 4: Simplify right side
    517,793.70x = 203,822,611,410.49
  5. Step 5: Solve for x
    x = 203,822,611,410.49/517,793.70
  6. Step 6: Final answer
    x = 393,636.72

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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.