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Finding the Fourth Proportional to 18,771.58, 25,924.17 and 16,241.55

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Solution

The fourth proportional to 18,771.58, 25,924.17 and 16,241.55 is: 22,430.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.58 : 25,924.17 = 16,241.55 : x
  2. Step 2: Convert to fraction form
    18,771.58/25,924.17 = 16,241.55/x
  3. Step 3: Cross multiply
    18,771.58x = 25,924.17 × 16,241.55
  4. Step 4: Simplify right side
    18,771.58x = 421,048,573.64
  5. Step 5: Solve for x
    x = 421,048,573.64/18,771.58
  6. Step 6: Final answer
    x = 22,430.11

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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.