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Finding the Fourth Proportional to 18,637.52, 25,725.87 and 11,933.15

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Solution

The fourth proportional to 18,637.52, 25,725.87 and 11,933.15 is: 16,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.52 : 25,725.87 = 11,933.15 : x
  2. Step 2: Convert to fraction form
    18,637.52/25,725.87 = 11,933.15/x
  3. Step 3: Cross multiply
    18,637.52x = 25,725.87 × 11,933.15
  4. Step 4: Simplify right side
    18,637.52x = 306,990,536.96
  5. Step 5: Solve for x
    x = 306,990,536.96/18,637.52
  6. Step 6: Final answer
    x = 16,471.65

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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.