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Finding the Fourth Proportional to 14,791.60, 22,219.80 and 10,920.88

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Solution

The fourth proportional to 14,791.60, 22,219.80 and 10,920.88 is: 16,405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.60 : 22,219.80 = 10,920.88 : x
  2. Step 2: Convert to fraction form
    14,791.60/22,219.80 = 10,920.88/x
  3. Step 3: Cross multiply
    14,791.60x = 22,219.80 × 10,920.88
  4. Step 4: Simplify right side
    14,791.60x = 242,659,769.42
  5. Step 5: Solve for x
    x = 242,659,769.42/14,791.60
  6. Step 6: Final answer
    x = 16,405.24

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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.