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Finding the Fourth Proportional to 18,792.63, 25,915.92 and 11,237.73

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Solution

The fourth proportional to 18,792.63, 25,915.92 and 11,237.73 is: 15,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.63 : 25,915.92 = 11,237.73 : x
  2. Step 2: Convert to fraction form
    18,792.63/25,915.92 = 11,237.73/x
  3. Step 3: Cross multiply
    18,792.63x = 25,915.92 × 11,237.73
  4. Step 4: Simplify right side
    18,792.63x = 291,236,111.66
  5. Step 5: Solve for x
    x = 291,236,111.66/18,792.63
  6. Step 6: Final answer
    x = 15,497.36

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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.