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Finding the Fourth Proportional to 93,311.20, 140,112.60 and 53,945.20

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Solution

The fourth proportional to 93,311.20, 140,112.60 and 53,945.20 is: 81,002.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,311.20 : 140,112.60 = 53,945.20 : x
  2. Step 2: Convert to fraction form
    93,311.20/140,112.60 = 53,945.20/x
  3. Step 3: Cross multiply
    93,311.20x = 140,112.60 × 53,945.20
  4. Step 4: Simplify right side
    93,311.20x = 7,558,402,229.52
  5. Step 5: Solve for x
    x = 7,558,402,229.52/93,311.20
  6. Step 6: Final answer
    x = 81,002.09

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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.