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Finding the Fourth Proportional to 47,993.76, 71,982.45 and 12,925.22

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Solution

The fourth proportional to 47,993.76, 71,982.45 and 12,925.22 is: 19,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,993.76 : 71,982.45 = 12,925.22 : x
  2. Step 2: Convert to fraction form
    47,993.76/71,982.45 = 12,925.22/x
  3. Step 3: Cross multiply
    47,993.76x = 71,982.45 × 12,925.22
  4. Step 4: Simplify right side
    47,993.76x = 930,388,642.48
  5. Step 5: Solve for x
    x = 930,388,642.48/47,993.76
  6. Step 6: Final answer
    x = 19,385.62

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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.