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Finding the Fourth Proportional to 14,679.20, 22,019.92 and 7,276.21

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Solution

The fourth proportional to 14,679.20, 22,019.92 and 7,276.21 is: 10,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.20 : 22,019.92 = 7,276.21 : x
  2. Step 2: Convert to fraction form
    14,679.20/22,019.92 = 7,276.21/x
  3. Step 3: Cross multiply
    14,679.20x = 22,019.92 × 7,276.21
  4. Step 4: Simplify right side
    14,679.20x = 160,221,488.86
  5. Step 5: Solve for x
    x = 160,221,488.86/14,679.20
  6. Step 6: Final answer
    x = 10,914.86

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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.