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Finding the Fourth Proportional to 14,913.08, 20,580.54 and 8,198.99

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Solution

The fourth proportional to 14,913.08, 20,580.54 and 8,198.99 is: 11,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.08 : 20,580.54 = 8,198.99 : x
  2. Step 2: Convert to fraction form
    14,913.08/20,580.54 = 8,198.99/x
  3. Step 3: Cross multiply
    14,913.08x = 20,580.54 × 8,198.99
  4. Step 4: Simplify right side
    14,913.08x = 168,739,538.75
  5. Step 5: Solve for x
    x = 168,739,538.75/14,913.08
  6. Step 6: Final answer
    x = 11,314.87

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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.