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Finding the Fourth Proportional to 23,679.55, 35,489.16 and 12,591.55

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Solution

The fourth proportional to 23,679.55, 35,489.16 and 12,591.55 is: 18,871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,679.55 : 35,489.16 = 12,591.55 : x
  2. Step 2: Convert to fraction form
    23,679.55/35,489.16 = 12,591.55/x
  3. Step 3: Cross multiply
    23,679.55x = 35,489.16 × 12,591.55
  4. Step 4: Simplify right side
    23,679.55x = 446,863,532.60
  5. Step 5: Solve for x
    x = 446,863,532.60/23,679.55
  6. Step 6: Final answer
    x = 18,871.28

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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.