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Finding the Fourth Proportional to 16,915.70, 25,371.15 and 5,230.10

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Solution

The fourth proportional to 16,915.70, 25,371.15 and 5,230.10 is: 7,844.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,915.70 : 25,371.15 = 5,230.10 : x
  2. Step 2: Convert to fraction form
    16,915.70/25,371.15 = 5,230.10/x
  3. Step 3: Cross multiply
    16,915.70x = 25,371.15 × 5,230.10
  4. Step 4: Simplify right side
    16,915.70x = 132,693,651.62
  5. Step 5: Solve for x
    x = 132,693,651.62/16,915.70
  6. Step 6: Final answer
    x = 7,844.41

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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.