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Finding the Fourth Proportional to 218,553.76, 327,720.84 and 127,398.48

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Solution

The fourth proportional to 218,553.76, 327,720.84 and 127,398.48 is: 191,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,553.76 : 327,720.84 = 127,398.48 : x
  2. Step 2: Convert to fraction form
    218,553.76/327,720.84 = 127,398.48/x
  3. Step 3: Cross multiply
    218,553.76x = 327,720.84 × 127,398.48
  4. Step 4: Simplify right side
    218,553.76x = 41,751,136,880.32
  5. Step 5: Solve for x
    x = 41,751,136,880.32/218,553.76
  6. Step 6: Final answer
    x = 191,033.72

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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.