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Finding the Fourth Proportional to 48,696.82, 73,048.00 and 13,639.21

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Solution

The fourth proportional to 48,696.82, 73,048.00 and 13,639.21 is: 20,459.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,696.82 : 73,048.00 = 13,639.21 : x
  2. Step 2: Convert to fraction form
    48,696.82/73,048.00 = 13,639.21/x
  3. Step 3: Cross multiply
    48,696.82x = 73,048.00 × 13,639.21
  4. Step 4: Simplify right side
    48,696.82x = 996,317,064.74
  5. Step 5: Solve for x
    x = 996,317,064.74/48,696.82
  6. Step 6: Final answer
    x = 20,459.59

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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.