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Finding the Fourth Proportional to 12,551.61, 18,790.42 and 10,994.65

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Solution

The fourth proportional to 12,551.61, 18,790.42 and 10,994.65 is: 16,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.61 : 18,790.42 = 10,994.65 : x
  2. Step 2: Convert to fraction form
    12,551.61/18,790.42 = 10,994.65/x
  3. Step 3: Cross multiply
    12,551.61x = 18,790.42 × 10,994.65
  4. Step 4: Simplify right side
    12,551.61x = 206,594,091.25
  5. Step 5: Solve for x
    x = 206,594,091.25/12,551.61
  6. Step 6: Final answer
    x = 16,459.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.