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Finding the Fourth Proportional to 93,217.82, 128,716.54 and 75,992.96

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Solution

The fourth proportional to 93,217.82, 128,716.54 and 75,992.96 is: 104,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,217.82 : 128,716.54 = 75,992.96 : x
  2. Step 2: Convert to fraction form
    93,217.82/128,716.54 = 75,992.96/x
  3. Step 3: Cross multiply
    93,217.82x = 128,716.54 × 75,992.96
  4. Step 4: Simplify right side
    93,217.82x = 9,781,550,875.56
  5. Step 5: Solve for x
    x = 9,781,550,875.56/93,217.82
  6. Step 6: Final answer
    x = 104,932.20

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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.