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Finding the Fourth Proportional to 415,954.80, 622,765.80 and 404,290.80

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Solution

The fourth proportional to 415,954.80, 622,765.80 and 404,290.80 is: 605,302.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,954.80 : 622,765.80 = 404,290.80 : x
  2. Step 2: Convert to fraction form
    415,954.80/622,765.80 = 404,290.80/x
  3. Step 3: Cross multiply
    415,954.80x = 622,765.80 × 404,290.80
  4. Step 4: Simplify right side
    415,954.80x = 251,778,483,494.64
  5. Step 5: Solve for x
    x = 251,778,483,494.64/415,954.80
  6. Step 6: Final answer
    x = 605,302.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.