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Finding the Fourth Proportional to 573,615.12, 791,589.53 and 318,960.84

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Solution

The fourth proportional to 573,615.12, 791,589.53 and 318,960.84 is: 440,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,615.12 : 791,589.53 = 318,960.84 : x
  2. Step 2: Convert to fraction form
    573,615.12/791,589.53 = 318,960.84/x
  3. Step 3: Cross multiply
    573,615.12x = 791,589.53 × 318,960.84
  4. Step 4: Simplify right side
    573,615.12x = 252,486,063,993.77
  5. Step 5: Solve for x
    x = 252,486,063,993.77/573,615.12
  6. Step 6: Final answer
    x = 440,166.33

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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.