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Finding the Fourth Proportional to 93,776.33, 129,471.69 and 83,687.44

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Solution

The fourth proportional to 93,776.33, 129,471.69 and 83,687.44 is: 115,542.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,776.33 : 129,471.69 = 83,687.44 : x
  2. Step 2: Convert to fraction form
    93,776.33/129,471.69 = 83,687.44/x
  3. Step 3: Cross multiply
    93,776.33x = 129,471.69 × 83,687.44
  4. Step 4: Simplify right side
    93,776.33x = 10,835,154,288.57
  5. Step 5: Solve for x
    x = 10,835,154,288.57/93,776.33
  6. Step 6: Final answer
    x = 115,542.53

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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.