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Finding the Fourth Proportional to 573,448.38, 791,359.68 and 318,799.56

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Solution

The fourth proportional to 573,448.38, 791,359.68 and 318,799.56 is: 439,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,448.38 : 791,359.68 = 318,799.56 : x
  2. Step 2: Convert to fraction form
    573,448.38/791,359.68 = 318,799.56/x
  3. Step 3: Cross multiply
    573,448.38x = 791,359.68 × 318,799.56
  4. Step 4: Simplify right side
    573,448.38x = 252,285,117,785.74
  5. Step 5: Solve for x
    x = 252,285,117,785.74/573,448.38
  6. Step 6: Final answer
    x = 439,943.90

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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.