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Finding the Fourth Proportional to 103,940.96, 155,911.57 and 25,055.19

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Solution

The fourth proportional to 103,940.96, 155,911.57 and 25,055.19 is: 37,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.96 : 155,911.57 = 25,055.19 : x
  2. Step 2: Convert to fraction form
    103,940.96/155,911.57 = 25,055.19/x
  3. Step 3: Cross multiply
    103,940.96x = 155,911.57 × 25,055.19
  4. Step 4: Simplify right side
    103,940.96x = 3,906,393,946.91
  5. Step 5: Solve for x
    x = 3,906,393,946.91/103,940.96
  6. Step 6: Final answer
    x = 37,582.82

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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.