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Finding the Fourth Proportional to 33,111.40, 49,653.90 and 10,918.60

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Solution

The fourth proportional to 33,111.40, 49,653.90 and 10,918.60 is: 16,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,111.40 : 49,653.90 = 10,918.60 : x
  2. Step 2: Convert to fraction form
    33,111.40/49,653.90 = 10,918.60/x
  3. Step 3: Cross multiply
    33,111.40x = 49,653.90 × 10,918.60
  4. Step 4: Simplify right side
    33,111.40x = 542,151,072.54
  5. Step 5: Solve for x
    x = 542,151,072.54/33,111.40
  6. Step 6: Final answer
    x = 16,373.55

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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.