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Finding the Fourth Proportional to 16,669.85, 24,991.79 and 8,345.57

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Solution

The fourth proportional to 16,669.85, 24,991.79 and 8,345.57 is: 12,511.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,669.85 : 24,991.79 = 8,345.57 : x
  2. Step 2: Convert to fraction form
    16,669.85/24,991.79 = 8,345.57/x
  3. Step 3: Cross multiply
    16,669.85x = 24,991.79 × 8,345.57
  4. Step 4: Simplify right side
    16,669.85x = 208,570,753.62
  5. Step 5: Solve for x
    x = 208,570,753.62/16,669.85
  6. Step 6: Final answer
    x = 12,511.86

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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.