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Finding the Fourth Proportional to 1,278,793.54, 1,764,749.72 and 705,834.16

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Solution

The fourth proportional to 1,278,793.54, 1,764,749.72 and 705,834.16 is: 974,059.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,793.54 : 1,764,749.72 = 705,834.16 : x
  2. Step 2: Convert to fraction form
    1,278,793.54/1,764,749.72 = 705,834.16/x
  3. Step 3: Cross multiply
    1,278,793.54x = 1,764,749.72 × 705,834.16
  4. Step 4: Simplify right side
    1,278,793.54x = 1,245,620,636,226.44
  5. Step 5: Solve for x
    x = 1,245,620,636,226.44/1,278,793.54
  6. Step 6: Final answer
    x = 974,059.22

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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.