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Finding the Fourth Proportional to 27,428.94, 41,143.11 and 8,708.48

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Solution

The fourth proportional to 27,428.94, 41,143.11 and 8,708.48 is: 13,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,428.94 : 41,143.11 = 8,708.48 : x
  2. Step 2: Convert to fraction form
    27,428.94/41,143.11 = 8,708.48/x
  3. Step 3: Cross multiply
    27,428.94x = 41,143.11 × 8,708.48
  4. Step 4: Simplify right side
    27,428.94x = 358,293,701.31
  5. Step 5: Solve for x
    x = 358,293,701.31/27,428.94
  6. Step 6: Final answer
    x = 13,062.62

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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.