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Finding the Fourth Proportional to 18,952.26, 28,408.53 and 10,620.06

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Solution

The fourth proportional to 18,952.26, 28,408.53 and 10,620.06 is: 15,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.26 : 28,408.53 = 10,620.06 : x
  2. Step 2: Convert to fraction form
    18,952.26/28,408.53 = 10,620.06/x
  3. Step 3: Cross multiply
    18,952.26x = 28,408.53 × 10,620.06
  4. Step 4: Simplify right side
    18,952.26x = 301,700,293.11
  5. Step 5: Solve for x
    x = 301,700,293.11/18,952.26
  6. Step 6: Final answer
    x = 15,918.96

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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.