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Finding the Fourth Proportional to 18,460.80, 27,691.26 and 7,370.28

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Solution

The fourth proportional to 18,460.80, 27,691.26 and 7,370.28 is: 11,055.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.80 : 27,691.26 = 7,370.28 : x
  2. Step 2: Convert to fraction form
    18,460.80/27,691.26 = 7,370.28/x
  3. Step 3: Cross multiply
    18,460.80x = 27,691.26 × 7,370.28
  4. Step 4: Simplify right side
    18,460.80x = 204,092,339.75
  5. Step 5: Solve for x
    x = 204,092,339.75/18,460.80
  6. Step 6: Final answer
    x = 11,055.44

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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.