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Finding the Fourth Proportional to 12,291.52, 18,433.68 and 4,893.52

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Solution

The fourth proportional to 12,291.52, 18,433.68 and 4,893.52 is: 7,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.52 : 18,433.68 = 4,893.52 : x
  2. Step 2: Convert to fraction form
    12,291.52/18,433.68 = 4,893.52/x
  3. Step 3: Cross multiply
    12,291.52x = 18,433.68 × 4,893.52
  4. Step 4: Simplify right side
    12,291.52x = 90,205,581.75
  5. Step 5: Solve for x
    x = 90,205,581.75/12,291.52
  6. Step 6: Final answer
    x = 7,338.85

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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.