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Finding the Fourth Proportional to 13,951.35, 20,909.22 and 6,539.48

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Solution

The fourth proportional to 13,951.35, 20,909.22 and 6,539.48 is: 9,800.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.35 : 20,909.22 = 6,539.48 : x
  2. Step 2: Convert to fraction form
    13,951.35/20,909.22 = 6,539.48/x
  3. Step 3: Cross multiply
    13,951.35x = 20,909.22 × 6,539.48
  4. Step 4: Simplify right side
    13,951.35x = 136,735,288.76
  5. Step 5: Solve for x
    x = 136,735,288.76/13,951.35
  6. Step 6: Final answer
    x = 9,800.87

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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.