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Finding the Fourth Proportional to 18,662.60, 25,759.68 and 12,293.84

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Solution

The fourth proportional to 18,662.60, 25,759.68 and 12,293.84 is: 16,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.60 : 25,759.68 = 12,293.84 : x
  2. Step 2: Convert to fraction form
    18,662.60/25,759.68 = 12,293.84/x
  3. Step 3: Cross multiply
    18,662.60x = 25,759.68 × 12,293.84
  4. Step 4: Simplify right side
    18,662.60x = 316,685,384.37
  5. Step 5: Solve for x
    x = 316,685,384.37/18,662.60
  6. Step 6: Final answer
    x = 16,968.99

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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.