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Finding the Fourth Proportional to 27,652.20, 41,428.80 and 16,813.20

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Solution

The fourth proportional to 27,652.20, 41,428.80 and 16,813.20 is: 25,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,652.20 : 41,428.80 = 16,813.20 : x
  2. Step 2: Convert to fraction form
    27,652.20/41,428.80 = 16,813.20/x
  3. Step 3: Cross multiply
    27,652.20x = 41,428.80 × 16,813.20
  4. Step 4: Simplify right side
    27,652.20x = 696,550,700.16
  5. Step 5: Solve for x
    x = 696,550,700.16/27,652.20
  6. Step 6: Final answer
    x = 25,189.70

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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.