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Finding the Fourth Proportional to 18,792.12, 25,915.23 and 11,237.23

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Solution

The fourth proportional to 18,792.12, 25,915.23 and 11,237.23 is: 15,496.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.12 : 25,915.23 = 11,237.23 : x
  2. Step 2: Convert to fraction form
    18,792.12/25,915.23 = 11,237.23/x
  3. Step 3: Cross multiply
    18,792.12x = 25,915.23 × 11,237.23
  4. Step 4: Simplify right side
    18,792.12x = 291,215,400.01
  5. Step 5: Solve for x
    x = 291,215,400.01/18,792.12
  6. Step 6: Final answer
    x = 15,496.68

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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.