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Finding the Fourth Proportional to 573,583.82, 791,540.76 and 318,932.78

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Solution

The fourth proportional to 573,583.82, 791,540.76 and 318,932.78 is: 440,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,583.82 : 791,540.76 = 318,932.78 : x
  2. Step 2: Convert to fraction form
    573,583.82/791,540.76 = 318,932.78/x
  3. Step 3: Cross multiply
    573,583.82x = 791,540.76 × 318,932.78
  4. Step 4: Simplify right side
    573,583.82x = 252,448,295,070.11
  5. Step 5: Solve for x
    x = 252,448,295,070.11/573,583.82
  6. Step 6: Final answer
    x = 440,124.51

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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.