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Finding the Fourth Proportional to 28,563.60, 42,861.60 and 11,034.66

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Solution

The fourth proportional to 28,563.60, 42,861.60 and 11,034.66 is: 16,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.60 : 42,861.60 = 11,034.66 : x
  2. Step 2: Convert to fraction form
    28,563.60/42,861.60 = 11,034.66/x
  3. Step 3: Cross multiply
    28,563.60x = 42,861.60 × 11,034.66
  4. Step 4: Simplify right side
    28,563.60x = 472,963,183.06
  5. Step 5: Solve for x
    x = 472,963,183.06/28,563.60
  6. Step 6: Final answer
    x = 16,558.25

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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.