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Finding the Fourth Proportional to 28,383.66, 42,580.66 and 11,734.66

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Solution

The fourth proportional to 28,383.66, 42,580.66 and 11,734.66 is: 17,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.66 : 42,580.66 = 11,734.66 : x
  2. Step 2: Convert to fraction form
    28,383.66/42,580.66 = 11,734.66/x
  3. Step 3: Cross multiply
    28,383.66x = 42,580.66 × 11,734.66
  4. Step 4: Simplify right side
    28,383.66x = 499,669,567.68
  5. Step 5: Solve for x
    x = 499,669,567.68/28,383.66
  6. Step 6: Final answer
    x = 17,604.13

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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.