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Finding the Fourth Proportional to 103,790.78, 155,708.04 and 33,664.64

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Solution

The fourth proportional to 103,790.78, 155,708.04 and 33,664.64 is: 50,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,790.78 : 155,708.04 = 33,664.64 : x
  2. Step 2: Convert to fraction form
    103,790.78/155,708.04 = 33,664.64/x
  3. Step 3: Cross multiply
    103,790.78x = 155,708.04 × 33,664.64
  4. Step 4: Simplify right side
    103,790.78x = 5,241,855,111.71
  5. Step 5: Solve for x
    x = 5,241,855,111.71/103,790.78
  6. Step 6: Final answer
    x = 50,504.05

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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.