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Finding the Fourth Proportional to 18,606.13, 27,859.41 and 15,653.68

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Solution

The fourth proportional to 18,606.13, 27,859.41 and 15,653.68 is: 23,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.13 : 27,859.41 = 15,653.68 : x
  2. Step 2: Convert to fraction form
    18,606.13/27,859.41 = 15,653.68/x
  3. Step 3: Cross multiply
    18,606.13x = 27,859.41 × 15,653.68
  4. Step 4: Simplify right side
    18,606.13x = 436,102,219.48
  5. Step 5: Solve for x
    x = 436,102,219.48/18,606.13
  6. Step 6: Final answer
    x = 23,438.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.