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Finding the Fourth Proportional to 103,960.77, 155,940.66 and 40,736.22

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Solution

The fourth proportional to 103,960.77, 155,940.66 and 40,736.22 is: 61,104.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,960.77 : 155,940.66 = 40,736.22 : x
  2. Step 2: Convert to fraction form
    103,960.77/155,940.66 = 40,736.22/x
  3. Step 3: Cross multiply
    103,960.77x = 155,940.66 × 40,736.22
  4. Step 4: Simplify right side
    103,960.77x = 6,352,433,032.71
  5. Step 5: Solve for x
    x = 6,352,433,032.71/103,960.77
  6. Step 6: Final answer
    x = 61,104.14

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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.