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Finding the Fourth Proportional to 18,992.16, 28,483.24 and 13,067.80

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Solution

The fourth proportional to 18,992.16, 28,483.24 and 13,067.80 is: 19,598.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.16 : 28,483.24 = 13,067.80 : x
  2. Step 2: Convert to fraction form
    18,992.16/28,483.24 = 13,067.80/x
  3. Step 3: Cross multiply
    18,992.16x = 28,483.24 × 13,067.80
  4. Step 4: Simplify right side
    18,992.16x = 372,213,283.67
  5. Step 5: Solve for x
    x = 372,213,283.67/18,992.16
  6. Step 6: Final answer
    x = 19,598.26

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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.