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Finding the Fourth Proportional to 621,179.46, 857,200.05 and 379,866.42

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Solution

The fourth proportional to 621,179.46, 857,200.05 and 379,866.42 is: 524,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,179.46 : 857,200.05 = 379,866.42 : x
  2. Step 2: Convert to fraction form
    621,179.46/857,200.05 = 379,866.42/x
  3. Step 3: Cross multiply
    621,179.46x = 857,200.05 × 379,866.42
  4. Step 4: Simplify right side
    621,179.46x = 325,621,514,217.32
  5. Step 5: Solve for x
    x = 325,621,514,217.32/621,179.46
  6. Step 6: Final answer
    x = 524,198.78

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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.