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Finding the Fourth Proportional to 618,517.75, 853,554.62 and 376,800.25

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Solution

The fourth proportional to 618,517.75, 853,554.62 and 376,800.25 is: 519,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,517.75 : 853,554.62 = 376,800.25 : x
  2. Step 2: Convert to fraction form
    618,517.75/853,554.62 = 376,800.25/x
  3. Step 3: Cross multiply
    618,517.75x = 853,554.62 × 376,800.25
  4. Step 4: Simplify right side
    618,517.75x = 321,619,594,204.66
  5. Step 5: Solve for x
    x = 321,619,594,204.66/618,517.75
  6. Step 6: Final answer
    x = 519,984.42

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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.