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Finding the Fourth Proportional to 236,516.21, 354,821.06 and 86,757.89

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Solution

The fourth proportional to 236,516.21, 354,821.06 and 86,757.89 is: 130,153.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,516.21 : 354,821.06 = 86,757.89 : x
  2. Step 2: Convert to fraction form
    236,516.21/354,821.06 = 86,757.89/x
  3. Step 3: Cross multiply
    236,516.21x = 354,821.06 × 86,757.89
  4. Step 4: Simplify right side
    236,516.21x = 30,783,524,285.27
  5. Step 5: Solve for x
    x = 30,783,524,285.27/236,516.21
  6. Step 6: Final answer
    x = 130,153.98

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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.