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Finding the Fourth Proportional to 633,976.22, 874,976.90 and 392,336.62

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Solution

The fourth proportional to 633,976.22, 874,976.90 and 392,336.62 is: 541,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,976.22 : 874,976.90 = 392,336.62 : x
  2. Step 2: Convert to fraction form
    633,976.22/874,976.90 = 392,336.62/x
  3. Step 3: Cross multiply
    633,976.22x = 874,976.90 × 392,336.62
  4. Step 4: Simplify right side
    633,976.22x = 343,285,475,374.95
  5. Step 5: Solve for x
    x = 343,285,475,374.95/633,976.22
  6. Step 6: Final answer
    x = 541,480.05

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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.