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Finding the Fourth Proportional to 93,321.45, 140,047.79 and 84,398.49

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Solution

The fourth proportional to 93,321.45, 140,047.79 and 84,398.49 is: 126,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.45 : 140,047.79 = 84,398.49 : x
  2. Step 2: Convert to fraction form
    93,321.45/140,047.79 = 84,398.49/x
  3. Step 3: Cross multiply
    93,321.45x = 140,047.79 × 84,398.49
  4. Step 4: Simplify right side
    93,321.45x = 11,819,821,581.84
  5. Step 5: Solve for x
    x = 11,819,821,581.84/93,321.45
  6. Step 6: Final answer
    x = 126,657.07

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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.