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Finding the Fourth Proportional to 11,530.54, 15,912.21 and 6,494.86

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Solution

The fourth proportional to 11,530.54, 15,912.21 and 6,494.86 is: 8,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,530.54 : 15,912.21 = 6,494.86 : x
  2. Step 2: Convert to fraction form
    11,530.54/15,912.21 = 6,494.86/x
  3. Step 3: Cross multiply
    11,530.54x = 15,912.21 × 6,494.86
  4. Step 4: Simplify right side
    11,530.54x = 103,347,576.24
  5. Step 5: Solve for x
    x = 103,347,576.24/11,530.54
  6. Step 6: Final answer
    x = 8,962.94

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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.