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Finding the Fourth Proportional to 18,588.84, 25,652.34 and 11,517

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Solution

The fourth proportional to 18,588.84, 25,652.34 and 11,517 is: 15,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.84 : 25,652.34 = 11,517 : x
  2. Step 2: Convert to fraction form
    18,588.84/25,652.34 = 11,517/x
  3. Step 3: Cross multiply
    18,588.84x = 25,652.34 × 11,517
  4. Step 4: Simplify right side
    18,588.84x = 295,437,999.78
  5. Step 5: Solve for x
    x = 295,437,999.78/18,588.84
  6. Step 6: Final answer
    x = 15,893.30

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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.