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Finding the Fourth Proportional to 93,469.20, 140,349.60 and 54,103.20

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Solution

The fourth proportional to 93,469.20, 140,349.60 and 54,103.20 is: 81,239.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,469.20 : 140,349.60 = 54,103.20 : x
  2. Step 2: Convert to fraction form
    93,469.20/140,349.60 = 54,103.20/x
  3. Step 3: Cross multiply
    93,469.20x = 140,349.60 × 54,103.20
  4. Step 4: Simplify right side
    93,469.20x = 7,593,362,478.72
  5. Step 5: Solve for x
    x = 7,593,362,478.72/93,469.20
  6. Step 6: Final answer
    x = 81,239.19

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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.