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Finding the Fourth Proportional to 41,209.80, 61,806.60 and 13,507.80

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Solution

The fourth proportional to 41,209.80, 61,806.60 and 13,507.80 is: 20,259.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,209.80 : 61,806.60 = 13,507.80 : x
  2. Step 2: Convert to fraction form
    41,209.80/61,806.60 = 13,507.80/x
  3. Step 3: Cross multiply
    41,209.80x = 61,806.60 × 13,507.80
  4. Step 4: Simplify right side
    41,209.80x = 834,871,191.48
  5. Step 5: Solve for x
    x = 834,871,191.48/41,209.80
  6. Step 6: Final answer
    x = 20,259.04

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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.