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Finding the Fourth Proportional to 172,614.88, 258,984.68 and 60,311.68

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Solution

The fourth proportional to 172,614.88, 258,984.68 and 60,311.68 is: 90,489.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,614.88 : 258,984.68 = 60,311.68 : x
  2. Step 2: Convert to fraction form
    172,614.88/258,984.68 = 60,311.68/x
  3. Step 3: Cross multiply
    172,614.88x = 258,984.68 × 60,311.68
  4. Step 4: Simplify right side
    172,614.88x = 15,619,801,145.06
  5. Step 5: Solve for x
    x = 15,619,801,145.06/172,614.88
  6. Step 6: Final answer
    x = 90,489.31

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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.