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Finding the Fourth Proportional to 18,474.75, 27,712.13 and 4,623.75

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Solution

The fourth proportional to 18,474.75, 27,712.13 and 4,623.75 is: 6,935.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.75 : 27,712.13 = 4,623.75 : x
  2. Step 2: Convert to fraction form
    18,474.75/27,712.13 = 4,623.75/x
  3. Step 3: Cross multiply
    18,474.75x = 27,712.13 × 4,623.75
  4. Step 4: Simplify right side
    18,474.75x = 128,133,937.97
  5. Step 5: Solve for x
    x = 128,133,937.97/18,474.75
  6. Step 6: Final answer
    x = 6,935.63

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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.