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Finding the Fourth Proportional to 11,978.73, 16,530.66 and 6,673.59

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Solution

The fourth proportional to 11,978.73, 16,530.66 and 6,673.59 is: 9,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978.73 : 16,530.66 = 6,673.59 : x
  2. Step 2: Convert to fraction form
    11,978.73/16,530.66 = 6,673.59/x
  3. Step 3: Cross multiply
    11,978.73x = 16,530.66 × 6,673.59
  4. Step 4: Simplify right side
    11,978.73x = 110,318,847.27
  5. Step 5: Solve for x
    x = 110,318,847.27/11,978.73
  6. Step 6: Final answer
    x = 9,209.56

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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.