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Finding the Fourth Proportional to 539,787.45, 809,683.82 and 219,942.50

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Solution

The fourth proportional to 539,787.45, 809,683.82 and 219,942.50 is: 329,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,787.45 : 809,683.82 = 219,942.50 : x
  2. Step 2: Convert to fraction form
    539,787.45/809,683.82 = 219,942.50/x
  3. Step 3: Cross multiply
    539,787.45x = 809,683.82 × 219,942.50
  4. Step 4: Simplify right side
    539,787.45x = 178,083,882,480.64
  5. Step 5: Solve for x
    x = 178,083,882,480.64/539,787.45
  6. Step 6: Final answer
    x = 329,914.83

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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.