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Finding the Fourth Proportional to 18,809.60, 25,957.42 and 11,736.14

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Solution

The fourth proportional to 18,809.60, 25,957.42 and 11,736.14 is: 16,195.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.60 : 25,957.42 = 11,736.14 : x
  2. Step 2: Convert to fraction form
    18,809.60/25,957.42 = 11,736.14/x
  3. Step 3: Cross multiply
    18,809.60x = 25,957.42 × 11,736.14
  4. Step 4: Simplify right side
    18,809.60x = 304,639,915.16
  5. Step 5: Solve for x
    x = 304,639,915.16/18,809.60
  6. Step 6: Final answer
    x = 16,195.98

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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.