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Finding the Fourth Proportional to 18,469.16, 25,487.64 and 10,511.90

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Solution

The fourth proportional to 18,469.16, 25,487.64 and 10,511.90 is: 14,506.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.16 : 25,487.64 = 10,511.90 : x
  2. Step 2: Convert to fraction form
    18,469.16/25,487.64 = 10,511.90/x
  3. Step 3: Cross multiply
    18,469.16x = 25,487.64 × 10,511.90
  4. Step 4: Simplify right side
    18,469.16x = 267,923,522.92
  5. Step 5: Solve for x
    x = 267,923,522.92/18,469.16
  6. Step 6: Final answer
    x = 14,506.54

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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.