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Finding the Fourth Proportional to 18,573.15, 27,859.79 and 4,722.15

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Solution

The fourth proportional to 18,573.15, 27,859.79 and 4,722.15 is: 7,083.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.15 : 27,859.79 = 4,722.15 : x
  2. Step 2: Convert to fraction form
    18,573.15/27,859.79 = 4,722.15/x
  3. Step 3: Cross multiply
    18,573.15x = 27,859.79 × 4,722.15
  4. Step 4: Simplify right side
    18,573.15x = 131,558,107.35
  5. Step 5: Solve for x
    x = 131,558,107.35/18,573.15
  6. Step 6: Final answer
    x = 7,083.24

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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.