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Finding the Fourth Proportional to 505,265.28, 697,241.58 and 287,453.44

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Solution

The fourth proportional to 505,265.28, 697,241.58 and 287,453.44 is: 396,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,265.28 : 697,241.58 = 287,453.44 : x
  2. Step 2: Convert to fraction form
    505,265.28/697,241.58 = 287,453.44/x
  3. Step 3: Cross multiply
    505,265.28x = 697,241.58 × 287,453.44
  4. Step 4: Simplify right side
    505,265.28x = 200,424,490,682.04
  5. Step 5: Solve for x
    x = 200,424,490,682.04/505,265.28
  6. Step 6: Final answer
    x = 396,671.81

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1.5x scale

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.