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Finding the Fourth Proportional to 863,392.11, 1,191,518 and 481,418.88

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Solution

The fourth proportional to 863,392.11, 1,191,518 and 481,418.88 is: 664,378.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,392.11 : 1,191,518 = 481,418.88 : x
  2. Step 2: Convert to fraction form
    863,392.11/1,191,518 = 481,418.88/x
  3. Step 3: Cross multiply
    863,392.11x = 1,191,518 × 481,418.88
  4. Step 4: Simplify right side
    863,392.11x = 573,619,261,059.84
  5. Step 5: Solve for x
    x = 573,619,261,059.84/863,392.11
  6. Step 6: Final answer
    x = 664,378.62

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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.