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Finding the Fourth Proportional to 93,129.45, 139,615.20 and 33,930.60

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Solution

The fourth proportional to 93,129.45, 139,615.20 and 33,930.60 is: 50,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,129.45 : 139,615.20 = 33,930.60 : x
  2. Step 2: Convert to fraction form
    93,129.45/139,615.20 = 33,930.60/x
  3. Step 3: Cross multiply
    93,129.45x = 139,615.20 × 33,930.60
  4. Step 4: Simplify right side
    93,129.45x = 4,737,227,505.12
  5. Step 5: Solve for x
    x = 4,737,227,505.12/93,129.45
  6. Step 6: Final answer
    x = 50,867.13

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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.