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Finding the Fourth Proportional to 15,091.41, 20,825.94 and 8,377.02

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Solution

The fourth proportional to 15,091.41, 20,825.94 and 8,377.02 is: 11,560.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.41 : 20,825.94 = 8,377.02 : x
  2. Step 2: Convert to fraction form
    15,091.41/20,825.94 = 8,377.02/x
  3. Step 3: Cross multiply
    15,091.41x = 20,825.94 × 8,377.02
  4. Step 4: Simplify right side
    15,091.41x = 174,459,169.88
  5. Step 5: Solve for x
    x = 174,459,169.88/15,091.41
  6. Step 6: Final answer
    x = 11,560.17

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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.