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Finding the Fourth Proportional to 863,757.78, 1,295,636.67 and 442,765.14

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Solution

The fourth proportional to 863,757.78, 1,295,636.67 and 442,765.14 is: 664,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,757.78 : 1,295,636.67 = 442,765.14 : x
  2. Step 2: Convert to fraction form
    863,757.78/1,295,636.67 = 442,765.14/x
  3. Step 3: Cross multiply
    863,757.78x = 1,295,636.67 × 442,765.14
  4. Step 4: Simplify right side
    863,757.78x = 573,662,751,581.68
  5. Step 5: Solve for x
    x = 573,662,751,581.68/863,757.78
  6. Step 6: Final answer
    x = 664,147.71

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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.