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Finding the Fourth Proportional to 318,148.19, 477,233.81 and 104,921.33

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Solution

The fourth proportional to 318,148.19, 477,233.81 and 104,921.33 is: 157,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,148.19 : 477,233.81 = 104,921.33 : x
  2. Step 2: Convert to fraction form
    318,148.19/477,233.81 = 104,921.33/x
  3. Step 3: Cross multiply
    318,148.19x = 477,233.81 × 104,921.33
  4. Step 4: Simplify right side
    318,148.19x = 50,072,003,991.48
  5. Step 5: Solve for x
    x = 50,072,003,991.48/318,148.19
  6. Step 6: Final answer
    x = 157,385.79

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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.