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Finding the Fourth Proportional to 43,408.80, 65,210.40 and 41,756.40

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Solution

The fourth proportional to 43,408.80, 65,210.40 and 41,756.40 is: 62,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.80 : 65,210.40 = 41,756.40 : x
  2. Step 2: Convert to fraction form
    43,408.80/65,210.40 = 41,756.40/x
  3. Step 3: Cross multiply
    43,408.80x = 65,210.40 × 41,756.40
  4. Step 4: Simplify right side
    43,408.80x = 2,722,951,546.56
  5. Step 5: Solve for x
    x = 2,722,951,546.56/43,408.80
  6. Step 6: Final answer
    x = 62,728.10

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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.