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Finding the Fourth Proportional to 19,167.44, 28,751.28 and 6,687.42

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Solution

The fourth proportional to 19,167.44, 28,751.28 and 6,687.42 is: 10,031.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,167.44 : 28,751.28 = 6,687.42 : x
  2. Step 2: Convert to fraction form
    19,167.44/28,751.28 = 6,687.42/x
  3. Step 3: Cross multiply
    19,167.44x = 28,751.28 × 6,687.42
  4. Step 4: Simplify right side
    19,167.44x = 192,271,884.90
  5. Step 5: Solve for x
    x = 192,271,884.90/19,167.44
  6. Step 6: Final answer
    x = 10,031.17

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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.