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Finding the Fourth Proportional to 573,245.64, 791,071.11 and 318,591.36

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Solution

The fourth proportional to 573,245.64, 791,071.11 and 318,591.36 is: 439,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,245.64 : 791,071.11 = 318,591.36 : x
  2. Step 2: Convert to fraction form
    573,245.64/791,071.11 = 318,591.36/x
  3. Step 3: Cross multiply
    573,245.64x = 791,071.11 × 318,591.36
  4. Step 4: Simplify right side
    573,245.64x = 252,028,420,791.61
  5. Step 5: Solve for x
    x = 252,028,420,791.61/573,245.64
  6. Step 6: Final answer
    x = 439,651.70

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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.