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Finding the Fourth Proportional to 11,960.55, 16,505.10 and 6,655.25

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Solution

The fourth proportional to 11,960.55, 16,505.10 and 6,655.25 is: 9,183.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,960.55 : 16,505.10 = 6,655.25 : x
  2. Step 2: Convert to fraction form
    11,960.55/16,505.10 = 6,655.25/x
  3. Step 3: Cross multiply
    11,960.55x = 16,505.10 × 6,655.25
  4. Step 4: Simplify right side
    11,960.55x = 109,845,566.78
  5. Step 5: Solve for x
    x = 109,845,566.78/11,960.55
  6. Step 6: Final answer
    x = 9,183.99

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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.