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Finding the Fourth Proportional to 573,464.13, 791,381.44 and 318,815.31

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Solution

The fourth proportional to 573,464.13, 791,381.44 and 318,815.31 is: 439,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,464.13 : 791,381.44 = 318,815.31 : x
  2. Step 2: Convert to fraction form
    573,464.13/791,381.44 = 318,815.31/x
  3. Step 3: Cross multiply
    573,464.13x = 791,381.44 × 318,815.31
  4. Step 4: Simplify right side
    573,464.13x = 252,304,519,121.85
  5. Step 5: Solve for x
    x = 252,304,519,121.85/573,464.13
  6. Step 6: Final answer
    x = 439,965.65

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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.