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Finding the Fourth Proportional to 622,383.45, 933,447.60 and 172,991.40

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Solution

The fourth proportional to 622,383.45, 933,447.60 and 172,991.40 is: 259,451.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,383.45 : 933,447.60 = 172,991.40 : x
  2. Step 2: Convert to fraction form
    622,383.45/933,447.60 = 172,991.40/x
  3. Step 3: Cross multiply
    622,383.45x = 933,447.60 × 172,991.40
  4. Step 4: Simplify right side
    622,383.45x = 161,478,407,150.64
  5. Step 5: Solve for x
    x = 161,478,407,150.64/622,383.45
  6. Step 6: Final answer
    x = 259,451.64

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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.