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Finding the Fourth Proportional to 618,515.25, 853,551.17 and 376,797.75

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Solution

The fourth proportional to 618,515.25, 853,551.17 and 376,797.75 is: 519,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,515.25 : 853,551.17 = 376,797.75 : x
  2. Step 2: Convert to fraction form
    618,515.25/853,551.17 = 376,797.75/x
  3. Step 3: Cross multiply
    618,515.25x = 853,551.17 × 376,797.75
  4. Step 4: Simplify right side
    618,515.25x = 321,616,160,365.87
  5. Step 5: Solve for x
    x = 321,616,160,365.87/618,515.25
  6. Step 6: Final answer
    x = 519,980.97

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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.