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Finding the Fourth Proportional to 41,212.80, 61,811.10 and 13,510.80

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Solution

The fourth proportional to 41,212.80, 61,811.10 and 13,510.80 is: 20,263.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,212.80 : 61,811.10 = 13,510.80 : x
  2. Step 2: Convert to fraction form
    41,212.80/61,811.10 = 13,510.80/x
  3. Step 3: Cross multiply
    41,212.80x = 61,811.10 × 13,510.80
  4. Step 4: Simplify right side
    41,212.80x = 835,117,409.88
  5. Step 5: Solve for x
    x = 835,117,409.88/41,212.80
  6. Step 6: Final answer
    x = 20,263.54

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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.