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Finding the Fourth Proportional to 18,859.09, 28,300.56 and 10,544.56

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Solution

The fourth proportional to 18,859.09, 28,300.56 and 10,544.56 is: 15,823.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.09 : 28,300.56 = 10,544.56 : x
  2. Step 2: Convert to fraction form
    18,859.09/28,300.56 = 10,544.56/x
  3. Step 3: Cross multiply
    18,859.09x = 28,300.56 × 10,544.56
  4. Step 4: Simplify right side
    18,859.09x = 298,416,952.95
  5. Step 5: Solve for x
    x = 298,416,952.95/18,859.09
  6. Step 6: Final answer
    x = 15,823.51

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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.