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Finding the Fourth Proportional to 8,398.53, 11,589.53 and 5,040.68

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Solution

The fourth proportional to 8,398.53, 11,589.53 and 5,040.68 is: 6,955.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.53 : 11,589.53 = 5,040.68 : x
  2. Step 2: Convert to fraction form
    8,398.53/11,589.53 = 5,040.68/x
  3. Step 3: Cross multiply
    8,398.53x = 11,589.53 × 5,040.68
  4. Step 4: Simplify right side
    8,398.53x = 58,419,028.93
  5. Step 5: Solve for x
    x = 58,419,028.93/8,398.53
  6. Step 6: Final answer
    x = 6,955.86

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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.