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Finding the Fourth Proportional to 8,489.56, 11,713.20 and 5,505.52

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Solution

The fourth proportional to 8,489.56, 11,713.20 and 5,505.52 is: 7,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.56 : 11,713.20 = 5,505.52 : x
  2. Step 2: Convert to fraction form
    8,489.56/11,713.20 = 5,505.52/x
  3. Step 3: Cross multiply
    8,489.56x = 11,713.20 × 5,505.52
  4. Step 4: Simplify right side
    8,489.56x = 64,487,256.86
  5. Step 5: Solve for x
    x = 64,487,256.86/8,489.56
  6. Step 6: Final answer
    x = 7,596.07

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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.