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Finding the Fourth Proportional to 18,626.53, 27,947.37 and 11,970.49

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Solution

The fourth proportional to 18,626.53, 27,947.37 and 11,970.49 is: 17,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.53 : 27,947.37 = 11,970.49 : x
  2. Step 2: Convert to fraction form
    18,626.53/27,947.37 = 11,970.49/x
  3. Step 3: Cross multiply
    18,626.53x = 27,947.37 × 11,970.49
  4. Step 4: Simplify right side
    18,626.53x = 334,543,713.11
  5. Step 5: Solve for x
    x = 334,543,713.11/18,626.53
  6. Step 6: Final answer
    x = 17,960.60

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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.