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Finding the Fourth Proportional to 13,756.59, 20,622.65 and 5,961.15

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Solution

The fourth proportional to 13,756.59, 20,622.65 and 5,961.15 is: 8,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.59 : 20,622.65 = 5,961.15 : x
  2. Step 2: Convert to fraction form
    13,756.59/20,622.65 = 5,961.15/x
  3. Step 3: Cross multiply
    13,756.59x = 20,622.65 × 5,961.15
  4. Step 4: Simplify right side
    13,756.59x = 122,934,680.24
  5. Step 5: Solve for x
    x = 122,934,680.24/13,756.59
  6. Step 6: Final answer
    x = 8,936.42

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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.