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Finding the Fourth Proportional to 587,116.80, 879,638.40 and 481,363.20

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Solution

The fourth proportional to 587,116.80, 879,638.40 and 481,363.20 is: 721,194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,116.80 : 879,638.40 = 481,363.20 : x
  2. Step 2: Convert to fraction form
    587,116.80/879,638.40 = 481,363.20/x
  3. Step 3: Cross multiply
    587,116.80x = 879,638.40 × 481,363.20
  4. Step 4: Simplify right side
    587,116.80x = 423,425,555,066.88
  5. Step 5: Solve for x
    x = 423,425,555,066.88/587,116.80
  6. Step 6: Final answer
    x = 721,194.75

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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.