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Finding the Fourth Proportional to 14,842.58, 20,481.98 and 8,126.92

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Solution

The fourth proportional to 14,842.58, 20,481.98 and 8,126.92 is: 11,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,842.58 : 20,481.98 = 8,126.92 : x
  2. Step 2: Convert to fraction form
    14,842.58/20,481.98 = 8,126.92/x
  3. Step 3: Cross multiply
    14,842.58x = 20,481.98 × 8,126.92
  4. Step 4: Simplify right side
    14,842.58x = 166,455,412.90
  5. Step 5: Solve for x
    x = 166,455,412.90/14,842.58
  6. Step 6: Final answer
    x = 11,214.72

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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.