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Finding the Fourth Proportional to 18,653.59, 25,734.92 and 11,100.24

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Solution

The fourth proportional to 18,653.59, 25,734.92 and 11,100.24 is: 15,314.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653.59 : 25,734.92 = 11,100.24 : x
  2. Step 2: Convert to fraction form
    18,653.59/25,734.92 = 11,100.24/x
  3. Step 3: Cross multiply
    18,653.59x = 25,734.92 × 11,100.24
  4. Step 4: Simplify right side
    18,653.59x = 285,663,732.88
  5. Step 5: Solve for x
    x = 285,663,732.88/18,653.59
  6. Step 6: Final answer
    x = 15,314.14

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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.