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Finding the Fourth Proportional to 606,411.20, 909,179.40 and 396,167.60

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Solution

The fourth proportional to 606,411.20, 909,179.40 and 396,167.60 is: 593,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,411.20 : 909,179.40 = 396,167.60 : x
  2. Step 2: Convert to fraction form
    606,411.20/909,179.40 = 396,167.60/x
  3. Step 3: Cross multiply
    606,411.20x = 909,179.40 × 396,167.60
  4. Step 4: Simplify right side
    606,411.20x = 360,187,420,867.44
  5. Step 5: Solve for x
    x = 360,187,420,867.44/606,411.20
  6. Step 6: Final answer
    x = 593,965.65

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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.