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Finding the Fourth Proportional to 14,212.68, 21,306.86 and 5,453.88

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Solution

The fourth proportional to 14,212.68, 21,306.86 and 5,453.88 is: 8,176.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,212.68 : 21,306.86 = 5,453.88 : x
  2. Step 2: Convert to fraction form
    14,212.68/21,306.86 = 5,453.88/x
  3. Step 3: Cross multiply
    14,212.68x = 21,306.86 × 5,453.88
  4. Step 4: Simplify right side
    14,212.68x = 116,205,030.35
  5. Step 5: Solve for x
    x = 116,205,030.35/14,212.68
  6. Step 6: Final answer
    x = 8,176.15

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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.