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Finding the Fourth Proportional to 18,578.97, 25,631.24 and 12,601.17

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Solution

The fourth proportional to 18,578.97, 25,631.24 and 12,601.17 is: 17,384.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.97 : 25,631.24 = 12,601.17 : x
  2. Step 2: Convert to fraction form
    18,578.97/25,631.24 = 12,601.17/x
  3. Step 3: Cross multiply
    18,578.97x = 25,631.24 × 12,601.17
  4. Step 4: Simplify right side
    18,578.97x = 322,983,549.54
  5. Step 5: Solve for x
    x = 322,983,549.54/18,578.97
  6. Step 6: Final answer
    x = 17,384.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.