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Finding the Fourth Proportional to 65,591.15, 90,513.50 and 36,911.39

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Solution

The fourth proportional to 65,591.15, 90,513.50 and 36,911.39 is: 50,936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,591.15 : 90,513.50 = 36,911.39 : x
  2. Step 2: Convert to fraction form
    65,591.15/90,513.50 = 36,911.39/x
  3. Step 3: Cross multiply
    65,591.15x = 90,513.50 × 36,911.39
  4. Step 4: Simplify right side
    65,591.15x = 3,340,978,461.64
  5. Step 5: Solve for x
    x = 3,340,978,461.64/65,591.15
  6. Step 6: Final answer
    x = 50,936.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.