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Finding the Fourth Proportional to 393,690.02, 590,628.59 and 127,450.41

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Solution

The fourth proportional to 393,690.02, 590,628.59 and 127,450.41 is: 191,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,690.02 : 590,628.59 = 127,450.41 : x
  2. Step 2: Convert to fraction form
    393,690.02/590,628.59 = 127,450.41/x
  3. Step 3: Cross multiply
    393,690.02x = 590,628.59 × 127,450.41
  4. Step 4: Simplify right side
    393,690.02x = 75,275,855,315.97
  5. Step 5: Solve for x
    x = 75,275,855,315.97/393,690.02
  6. Step 6: Final answer
    x = 191,205.90

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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.