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Finding the Fourth Proportional to 451,805.79, 677,713.55 and 136,265.43

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Solution

The fourth proportional to 451,805.79, 677,713.55 and 136,265.43 is: 204,399.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,805.79 : 677,713.55 = 136,265.43 : x
  2. Step 2: Convert to fraction form
    451,805.79/677,713.55 = 136,265.43/x
  3. Step 3: Cross multiply
    451,805.79x = 677,713.55 × 136,265.43
  4. Step 4: Simplify right side
    451,805.79x = 92,348,927,626.25
  5. Step 5: Solve for x
    x = 92,348,927,626.25/451,805.79
  6. Step 6: Final answer
    x = 204,399.61

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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.