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Finding the Fourth Proportional to 93,456.52, 128,969.62 and 51,015.09

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Solution

The fourth proportional to 93,456.52, 128,969.62 and 51,015.09 is: 70,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,456.52 : 128,969.62 = 51,015.09 : x
  2. Step 2: Convert to fraction form
    93,456.52/128,969.62 = 51,015.09/x
  3. Step 3: Cross multiply
    93,456.52x = 128,969.62 × 51,015.09
  4. Step 4: Simplify right side
    93,456.52x = 6,579,396,771.57
  5. Step 5: Solve for x
    x = 6,579,396,771.57/93,456.52
  6. Step 6: Final answer
    x = 70,400.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.