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Finding the Fourth Proportional to 40,986.91, 61,480.03 and 11,404.66

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Solution

The fourth proportional to 40,986.91, 61,480.03 and 11,404.66 is: 17,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,986.91 : 61,480.03 = 11,404.66 : x
  2. Step 2: Convert to fraction form
    40,986.91/61,480.03 = 11,404.66/x
  3. Step 3: Cross multiply
    40,986.91x = 61,480.03 × 11,404.66
  4. Step 4: Simplify right side
    40,986.91x = 701,158,838.94
  5. Step 5: Solve for x
    x = 701,158,838.94/40,986.91
  6. Step 6: Final answer
    x = 17,106.90

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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.