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Finding the Fourth Proportional to 93,896.51, 140,985.48 and 81,285.17

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Solution

The fourth proportional to 93,896.51, 140,985.48 and 81,285.17 is: 122,049.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,896.51 : 140,985.48 = 81,285.17 : x
  2. Step 2: Convert to fraction form
    93,896.51/140,985.48 = 81,285.17/x
  3. Step 3: Cross multiply
    93,896.51x = 140,985.48 × 81,285.17
  4. Step 4: Simplify right side
    93,896.51x = 11,460,028,709.33
  5. Step 5: Solve for x
    x = 11,460,028,709.33/93,896.51
  6. Step 6: Final answer
    x = 122,049.57

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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.