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Finding the Fourth Proportional to 103,516.80, 155,236.80 and 41,174.40

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Solution

The fourth proportional to 103,516.80, 155,236.80 and 41,174.40 is: 61,746.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,516.80 : 155,236.80 = 41,174.40 : x
  2. Step 2: Convert to fraction form
    103,516.80/155,236.80 = 41,174.40/x
  3. Step 3: Cross multiply
    103,516.80x = 155,236.80 × 41,174.40
  4. Step 4: Simplify right side
    103,516.80x = 6,391,782,097.92
  5. Step 5: Solve for x
    x = 6,391,782,097.92/103,516.80
  6. Step 6: Final answer
    x = 61,746.33

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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.