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Finding the Fourth Proportional to 18,919.12, 28,352.10 and 14,952.94

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Solution

The fourth proportional to 18,919.12, 28,352.10 and 14,952.94 is: 22,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.12 : 28,352.10 = 14,952.94 : x
  2. Step 2: Convert to fraction form
    18,919.12/28,352.10 = 14,952.94/x
  3. Step 3: Cross multiply
    18,919.12x = 28,352.10 × 14,952.94
  4. Step 4: Simplify right side
    18,919.12x = 423,947,250.17
  5. Step 5: Solve for x
    x = 423,947,250.17/18,919.12
  6. Step 6: Final answer
    x = 22,408.40

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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.