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Finding the Fourth Proportional to 18,568.88, 27,840.86 and 7,313.93

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Solution

The fourth proportional to 18,568.88, 27,840.86 and 7,313.93 is: 10,965.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.88 : 27,840.86 = 7,313.93 : x
  2. Step 2: Convert to fraction form
    18,568.88/27,840.86 = 7,313.93/x
  3. Step 3: Cross multiply
    18,568.88x = 27,840.86 × 7,313.93
  4. Step 4: Simplify right side
    18,568.88x = 203,626,101.18
  5. Step 5: Solve for x
    x = 203,626,101.18/18,568.88
  6. Step 6: Final answer
    x = 10,965.99

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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.