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Finding the Fourth Proportional to 573,676.80, 860,515.20 and 415,161.60

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Solution

The fourth proportional to 573,676.80, 860,515.20 and 415,161.60 is: 622,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,676.80 : 860,515.20 = 415,161.60 : x
  2. Step 2: Convert to fraction form
    573,676.80/860,515.20 = 415,161.60/x
  3. Step 3: Cross multiply
    573,676.80x = 860,515.20 × 415,161.60
  4. Step 4: Simplify right side
    573,676.80x = 357,252,867,256.32
  5. Step 5: Solve for x
    x = 357,252,867,256.32/573,676.80
  6. Step 6: Final answer
    x = 622,742.40

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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.