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Finding the Fourth Proportional to 577,481.40, 866,205.90 and 261,937.80

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Solution

The fourth proportional to 577,481.40, 866,205.90 and 261,937.80 is: 392,899.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,481.40 : 866,205.90 = 261,937.80 : x
  2. Step 2: Convert to fraction form
    577,481.40/866,205.90 = 261,937.80/x
  3. Step 3: Cross multiply
    577,481.40x = 866,205.90 × 261,937.80
  4. Step 4: Simplify right side
    577,481.40x = 226,892,067,793.02
  5. Step 5: Solve for x
    x = 226,892,067,793.02/577,481.40
  6. Step 6: Final answer
    x = 392,899.35

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1.5x scale

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.