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Finding the Fourth Proportional to 505,265.53, 697,241.93 and 287,453.69

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Solution

The fourth proportional to 505,265.53, 697,241.93 and 287,453.69 is: 396,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,265.53 : 697,241.93 = 287,453.69 : x
  2. Step 2: Convert to fraction form
    505,265.53/697,241.93 = 287,453.69/x
  3. Step 3: Cross multiply
    505,265.53x = 697,241.93 × 287,453.69
  4. Step 4: Simplify right side
    505,265.53x = 200,424,764,163.95
  5. Step 5: Solve for x
    x = 200,424,764,163.95/505,265.53
  6. Step 6: Final answer
    x = 396,672.15

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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.