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Finding the Fourth Proportional to 14,998.46, 20,690.99 and 8,709.62

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Solution

The fourth proportional to 14,998.46, 20,690.99 and 8,709.62 is: 12,015.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,998.46 : 20,690.99 = 8,709.62 : x
  2. Step 2: Convert to fraction form
    14,998.46/20,690.99 = 8,709.62/x
  3. Step 3: Cross multiply
    14,998.46x = 20,690.99 × 8,709.62
  4. Step 4: Simplify right side
    14,998.46x = 180,210,513.32
  5. Step 5: Solve for x
    x = 180,210,513.32/14,998.46
  6. Step 6: Final answer
    x = 12,015.27

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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.