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Finding the Fourth Proportional to 71,755.15, 107,699.22 and 36,241.40

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Solution

The fourth proportional to 71,755.15, 107,699.22 and 36,241.40 is: 54,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,755.15 : 107,699.22 = 36,241.40 : x
  2. Step 2: Convert to fraction form
    71,755.15/107,699.22 = 36,241.40/x
  3. Step 3: Cross multiply
    71,755.15x = 107,699.22 × 36,241.40
  4. Step 4: Simplify right side
    71,755.15x = 3,903,170,871.56
  5. Step 5: Solve for x
    x = 3,903,170,871.56/71,755.15
  6. Step 6: Final answer
    x = 54,395.69

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1.5x scale

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.