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Finding the Fourth Proportional to 451,358.80, 622,511.96 and 396,794.31

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Solution

The fourth proportional to 451,358.80, 622,511.96 and 396,794.31 is: 547,256.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,358.80 : 622,511.96 = 396,794.31 : x
  2. Step 2: Convert to fraction form
    451,358.80/622,511.96 = 396,794.31/x
  3. Step 3: Cross multiply
    451,358.80x = 622,511.96 × 396,794.31
  4. Step 4: Simplify right side
    451,358.80x = 247,009,200,026.40
  5. Step 5: Solve for x
    x = 247,009,200,026.40/451,358.80
  6. Step 6: Final answer
    x = 547,256.86

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1.5x scale

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.