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Finding the Fourth Proportional to 218,761.26, 328,160.46 and 60,989.88

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Solution

The fourth proportional to 218,761.26, 328,160.46 and 60,989.88 is: 91,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,761.26 : 328,160.46 = 60,989.88 : x
  2. Step 2: Convert to fraction form
    218,761.26/328,160.46 = 60,989.88/x
  3. Step 3: Cross multiply
    218,761.26x = 328,160.46 × 60,989.88
  4. Step 4: Simplify right side
    218,761.26x = 20,014,467,076.14
  5. Step 5: Solve for x
    x = 20,014,467,076.14/218,761.26
  6. Step 6: Final answer
    x = 91,490.00

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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.