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Finding the Fourth Proportional to 318,057.21, 477,144.33 and 104,837.79

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Solution

The fourth proportional to 318,057.21, 477,144.33 and 104,837.79 is: 157,275.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,057.21 : 477,144.33 = 104,837.79 : x
  2. Step 2: Convert to fraction form
    318,057.21/477,144.33 = 104,837.79/x
  3. Step 3: Cross multiply
    318,057.21x = 477,144.33 × 104,837.79
  4. Step 4: Simplify right side
    318,057.21x = 50,022,757,068.23
  5. Step 5: Solve for x
    x = 50,022,757,068.23/318,057.21
  6. Step 6: Final answer
    x = 157,275.97

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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.