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Finding the Fourth Proportional to 55,956.79, 83,868.42 and 38,997.97

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Solution

The fourth proportional to 55,956.79, 83,868.42 and 38,997.97 is: 58,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,956.79 : 83,868.42 = 38,997.97 : x
  2. Step 2: Convert to fraction form
    55,956.79/83,868.42 = 38,997.97/x
  3. Step 3: Cross multiply
    55,956.79x = 83,868.42 × 38,997.97
  4. Step 4: Simplify right side
    55,956.79x = 3,270,698,063.68
  5. Step 5: Solve for x
    x = 3,270,698,063.68/55,956.79
  6. Step 6: Final answer
    x = 58,450.42

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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.