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Finding the Fourth Proportional to 103,650.64, 155,485.68 and 41,326

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Solution

The fourth proportional to 103,650.64, 155,485.68 and 41,326 is: 61,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,650.64 : 155,485.68 = 41,326 : x
  2. Step 2: Convert to fraction form
    103,650.64/155,485.68 = 41,326/x
  3. Step 3: Cross multiply
    103,650.64x = 155,485.68 × 41,326
  4. Step 4: Simplify right side
    103,650.64x = 6,425,601,211.68
  5. Step 5: Solve for x
    x = 6,425,601,211.68/103,650.64
  6. Step 6: Final answer
    x = 61,992.88

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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.