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Finding the Fourth Proportional to 393,806.11, 590,680.62 and 153,874.90

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Solution

The fourth proportional to 393,806.11, 590,680.62 and 153,874.90 is: 230,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,806.11 : 590,680.62 = 153,874.90 : x
  2. Step 2: Convert to fraction form
    393,806.11/590,680.62 = 153,874.90/x
  3. Step 3: Cross multiply
    393,806.11x = 590,680.62 × 153,874.90
  4. Step 4: Simplify right side
    393,806.11x = 90,890,921,334.44
  5. Step 5: Solve for x
    x = 90,890,921,334.44/393,806.11
  6. Step 6: Final answer
    x = 230,801.20

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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.