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Finding the Fourth Proportional to 13,774.73, 20,661.39 and 7,546.89

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Solution

The fourth proportional to 13,774.73, 20,661.39 and 7,546.89 is: 11,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,774.73 : 20,661.39 = 7,546.89 : x
  2. Step 2: Convert to fraction form
    13,774.73/20,661.39 = 7,546.89/x
  3. Step 3: Cross multiply
    13,774.73x = 20,661.39 × 7,546.89
  4. Step 4: Simplify right side
    13,774.73x = 155,929,237.58
  5. Step 5: Solve for x
    x = 155,929,237.58/13,774.73
  6. Step 6: Final answer
    x = 11,319.95

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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.