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Finding the Fourth Proportional to 573,672.60, 791,591.40 and 318,974.76

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Solution

The fourth proportional to 573,672.60, 791,591.40 and 318,974.76 is: 440,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,672.60 : 791,591.40 = 318,974.76 : x
  2. Step 2: Convert to fraction form
    573,672.60/791,591.40 = 318,974.76/x
  3. Step 3: Cross multiply
    573,672.60x = 791,591.40 × 318,974.76
  4. Step 4: Simplify right side
    573,672.60x = 252,497,676,833.06
  5. Step 5: Solve for x
    x = 252,497,676,833.06/573,672.60
  6. Step 6: Final answer
    x = 440,142.47

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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.