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Finding the Fourth Proportional to 12,363.73, 18,551.69 and 5,788.78

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Solution

The fourth proportional to 12,363.73, 18,551.69 and 5,788.78 is: 8,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.73 : 18,551.69 = 5,788.78 : x
  2. Step 2: Convert to fraction form
    12,363.73/18,551.69 = 5,788.78/x
  3. Step 3: Cross multiply
    12,363.73x = 18,551.69 × 5,788.78
  4. Step 4: Simplify right side
    12,363.73x = 107,391,652.04
  5. Step 5: Solve for x
    x = 107,391,652.04/12,363.73
  6. Step 6: Final answer
    x = 8,686.02

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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.