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Finding the Fourth Proportional to 393,976.96, 593,624.80 and 325,392.64

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Solution

The fourth proportional to 393,976.96, 593,624.80 and 325,392.64 is: 490,285.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,976.96 : 593,624.80 = 325,392.64 : x
  2. Step 2: Convert to fraction form
    393,976.96/593,624.80 = 325,392.64/x
  3. Step 3: Cross multiply
    393,976.96x = 593,624.80 × 325,392.64
  4. Step 4: Simplify right side
    393,976.96x = 193,161,140,841.47
  5. Step 5: Solve for x
    x = 193,161,140,841.47/393,976.96
  6. Step 6: Final answer
    x = 490,285.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.