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Finding the Fourth Proportional to 14,732.74, 20,330.97 and 8,108.74

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Solution

The fourth proportional to 14,732.74, 20,330.97 and 8,108.74 is: 11,189.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,732.74 : 20,330.97 = 8,108.74 : x
  2. Step 2: Convert to fraction form
    14,732.74/20,330.97 = 8,108.74/x
  3. Step 3: Cross multiply
    14,732.74x = 20,330.97 × 8,108.74
  4. Step 4: Simplify right side
    14,732.74x = 164,858,549.68
  5. Step 5: Solve for x
    x = 164,858,549.68/14,732.74
  6. Step 6: Final answer
    x = 11,189.94

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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.