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Finding the Fourth Proportional to 573,380.24, 791,265.66 and 318,729.20

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Solution

The fourth proportional to 573,380.24, 791,265.66 and 318,729.20 is: 439,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,380.24 : 791,265.66 = 318,729.20 : x
  2. Step 2: Convert to fraction form
    573,380.24/791,265.66 = 318,729.20/x
  3. Step 3: Cross multiply
    573,380.24x = 791,265.66 × 318,729.20
  4. Step 4: Simplify right side
    573,380.24x = 252,199,470,799.27
  5. Step 5: Solve for x
    x = 252,199,470,799.27/573,380.24
  6. Step 6: Final answer
    x = 439,846.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.