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Finding the Fourth Proportional to 18,760.40, 25,892.81 and 12,054.41

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Solution

The fourth proportional to 18,760.40, 25,892.81 and 12,054.41 is: 16,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.40 : 25,892.81 = 12,054.41 : x
  2. Step 2: Convert to fraction form
    18,760.40/25,892.81 = 12,054.41/x
  3. Step 3: Cross multiply
    18,760.40x = 25,892.81 × 12,054.41
  4. Step 4: Simplify right side
    18,760.40x = 312,122,358.06
  5. Step 5: Solve for x
    x = 312,122,358.06/18,760.40
  6. Step 6: Final answer
    x = 16,637.30

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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.