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Finding the Fourth Proportional to 18,702.20, 27,943.74 and 18,048.14

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Solution

The fourth proportional to 18,702.20, 27,943.74 and 18,048.14 is: 26,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.20 : 27,943.74 = 18,048.14 : x
  2. Step 2: Convert to fraction form
    18,702.20/27,943.74 = 18,048.14/x
  3. Step 3: Cross multiply
    18,702.20x = 27,943.74 × 18,048.14
  4. Step 4: Simplify right side
    18,702.20x = 504,332,531.64
  5. Step 5: Solve for x
    x = 504,332,531.64/18,702.20
  6. Step 6: Final answer
    x = 26,966.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.