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Finding the Fourth Proportional to 18,213.20, 25,567.60 and 18,213.20

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Solution

The fourth proportional to 18,213.20, 25,567.60 and 18,213.20 is: 25,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.20 : 25,567.60 = 18,213.20 : x
  2. Step 2: Convert to fraction form
    18,213.20/25,567.60 = 18,213.20/x
  3. Step 3: Cross multiply
    18,213.20x = 25,567.60 × 18,213.20
  4. Step 4: Simplify right side
    18,213.20x = 465,667,812.32
  5. Step 5: Solve for x
    x = 465,667,812.32/18,213.20
  6. Step 6: Final answer
    x = 25,567.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.