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Finding the Fourth Proportional to 40,993.74, 61,480.89 and 11,412.54

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Solution

The fourth proportional to 40,993.74, 61,480.89 and 11,412.54 is: 17,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,993.74 : 61,480.89 = 11,412.54 : x
  2. Step 2: Convert to fraction form
    40,993.74/61,480.89 = 11,412.54/x
  3. Step 3: Cross multiply
    40,993.74x = 61,480.89 × 11,412.54
  4. Step 4: Simplify right side
    40,993.74x = 701,653,116.36
  5. Step 5: Solve for x
    x = 701,653,116.36/40,993.74
  6. Step 6: Final answer
    x = 17,116.10

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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.