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Finding the Fourth Proportional to 19,043.22, 28,583.28 and 9,189.42

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Solution

The fourth proportional to 19,043.22, 28,583.28 and 9,189.42 is: 13,793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,043.22 : 28,583.28 = 9,189.42 : x
  2. Step 2: Convert to fraction form
    19,043.22/28,583.28 = 9,189.42/x
  3. Step 3: Cross multiply
    19,043.22x = 28,583.28 × 9,189.42
  4. Step 4: Simplify right side
    19,043.22x = 262,663,764.90
  5. Step 5: Solve for x
    x = 262,663,764.90/19,043.22
  6. Step 6: Final answer
    x = 13,793.03

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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.