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Finding the Fourth Proportional to 28,593.92, 42,890.60 and 11,051.48

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Solution

The fourth proportional to 28,593.92, 42,890.60 and 11,051.48 is: 16,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.92 : 42,890.60 = 11,051.48 : x
  2. Step 2: Convert to fraction form
    28,593.92/42,890.60 = 11,051.48/x
  3. Step 3: Cross multiply
    28,593.92x = 42,890.60 × 11,051.48
  4. Step 4: Simplify right side
    28,593.92x = 474,004,608.09
  5. Step 5: Solve for x
    x = 474,004,608.09/28,593.92
  6. Step 6: Final answer
    x = 16,577.11

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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.