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Finding the Fourth Proportional to 18,596.96, 25,639.86 and 11,511.08

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Solution

The fourth proportional to 18,596.96, 25,639.86 and 11,511.08 is: 15,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,596.96 : 25,639.86 = 11,511.08 : x
  2. Step 2: Convert to fraction form
    18,596.96/25,639.86 = 11,511.08/x
  3. Step 3: Cross multiply
    18,596.96x = 25,639.86 × 11,511.08
  4. Step 4: Simplify right side
    18,596.96x = 295,142,479.65
  5. Step 5: Solve for x
    x = 295,142,479.65/18,596.96
  6. Step 6: Final answer
    x = 15,870.47

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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.