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Finding the Fourth Proportional to 14,380.40, 19,847.72 and 8,092.40

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Solution

The fourth proportional to 14,380.40, 19,847.72 and 8,092.40 is: 11,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.40 : 19,847.72 = 8,092.40 : x
  2. Step 2: Convert to fraction form
    14,380.40/19,847.72 = 8,092.40/x
  3. Step 3: Cross multiply
    14,380.40x = 19,847.72 × 8,092.40
  4. Step 4: Simplify right side
    14,380.40x = 160,615,689.33
  5. Step 5: Solve for x
    x = 160,615,689.33/14,380.40
  6. Step 6: Final answer
    x = 11,169.07

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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.