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Finding the Fourth Proportional to 93,194.75, 139,789.80 and 30,019.21

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Solution

The fourth proportional to 93,194.75, 139,789.80 and 30,019.21 is: 45,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,194.75 : 139,789.80 = 30,019.21 : x
  2. Step 2: Convert to fraction form
    93,194.75/139,789.80 = 30,019.21/x
  3. Step 3: Cross multiply
    93,194.75x = 139,789.80 × 30,019.21
  4. Step 4: Simplify right side
    93,194.75x = 4,196,379,012.58
  5. Step 5: Solve for x
    x = 4,196,379,012.58/93,194.75
  6. Step 6: Final answer
    x = 45,028.06

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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.