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Finding the Fourth Proportional to 217,593.81, 326,237.63 and 84,361.77

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Solution

The fourth proportional to 217,593.81, 326,237.63 and 84,361.77 is: 126,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,593.81 : 326,237.63 = 84,361.77 : x
  2. Step 2: Convert to fraction form
    217,593.81/326,237.63 = 84,361.77/x
  3. Step 3: Cross multiply
    217,593.81x = 326,237.63 × 84,361.77
  4. Step 4: Simplify right side
    217,593.81x = 27,521,983,485.60
  5. Step 5: Solve for x
    x = 27,521,983,485.60/217,593.81
  6. Step 6: Final answer
    x = 126,483.30

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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.