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Finding the Fourth Proportional to 18,610.10, 27,915.15 and 17,297.90

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Solution

The fourth proportional to 18,610.10, 27,915.15 and 17,297.90 is: 25,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.10 : 27,915.15 = 17,297.90 : x
  2. Step 2: Convert to fraction form
    18,610.10/27,915.15 = 17,297.90/x
  3. Step 3: Cross multiply
    18,610.10x = 27,915.15 × 17,297.90
  4. Step 4: Simplify right side
    18,610.10x = 482,873,473.19
  5. Step 5: Solve for x
    x = 482,873,473.19/18,610.10
  6. Step 6: Final answer
    x = 25,946.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.