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Finding the Fourth Proportional to 572,920.85, 857,757.36 and 476,080.49

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Solution

The fourth proportional to 572,920.85, 857,757.36 and 476,080.49 is: 712,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,920.85 : 857,757.36 = 476,080.49 : x
  2. Step 2: Convert to fraction form
    572,920.85/857,757.36 = 476,080.49/x
  3. Step 3: Cross multiply
    572,920.85x = 857,757.36 × 476,080.49
  4. Step 4: Simplify right side
    572,920.85x = 408,361,544,249.91
  5. Step 5: Solve for x
    x = 408,361,544,249.91/572,920.85
  6. Step 6: Final answer
    x = 712,771.31

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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.