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Finding the Fourth Proportional to 628,556.82, 866,805.39 and 422,291.22

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Solution

The fourth proportional to 628,556.82, 866,805.39 and 422,291.22 is: 582,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,556.82 : 866,805.39 = 422,291.22 : x
  2. Step 2: Convert to fraction form
    628,556.82/866,805.39 = 422,291.22/x
  3. Step 3: Cross multiply
    628,556.82x = 866,805.39 × 422,291.22
  4. Step 4: Simplify right side
    628,556.82x = 366,044,305,645.68
  5. Step 5: Solve for x
    x = 366,044,305,645.68/628,556.82
  6. Step 6: Final answer
    x = 582,356.75

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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.