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Finding the Fourth Proportional to 14,794.20, 20,415.92 and 8,079.76

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Solution

The fourth proportional to 14,794.20, 20,415.92 and 8,079.76 is: 11,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,794.20 : 20,415.92 = 8,079.76 : x
  2. Step 2: Convert to fraction form
    14,794.20/20,415.92 = 8,079.76/x
  3. Step 3: Cross multiply
    14,794.20x = 20,415.92 × 8,079.76
  4. Step 4: Simplify right side
    14,794.20x = 164,955,733.78
  5. Step 5: Solve for x
    x = 164,955,733.78/14,794.20
  6. Step 6: Final answer
    x = 11,150.03

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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.