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Finding the Fourth Proportional to 218,042.40, 327,272.40 and 112,936.80

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Solution

The fourth proportional to 218,042.40, 327,272.40 and 112,936.80 is: 169,513.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,042.40 : 327,272.40 = 112,936.80 : x
  2. Step 2: Convert to fraction form
    218,042.40/327,272.40 = 112,936.80/x
  3. Step 3: Cross multiply
    218,042.40x = 327,272.40 × 112,936.80
  4. Step 4: Simplify right side
    218,042.40x = 36,961,097,584.32
  5. Step 5: Solve for x
    x = 36,961,097,584.32/218,042.40
  6. Step 6: Final answer
    x = 169,513.35

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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.