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Finding the Fourth Proportional to 18,453.64, 25,460.20 and 11,374.96

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Solution

The fourth proportional to 18,453.64, 25,460.20 and 11,374.96 is: 15,693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.64 : 25,460.20 = 11,374.96 : x
  2. Step 2: Convert to fraction form
    18,453.64/25,460.20 = 11,374.96/x
  3. Step 3: Cross multiply
    18,453.64x = 25,460.20 × 11,374.96
  4. Step 4: Simplify right side
    18,453.64x = 289,608,756.59
  5. Step 5: Solve for x
    x = 289,608,756.59/18,453.64
  6. Step 6: Final answer
    x = 15,693.86

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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.