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Finding the Fourth Proportional to 104,362.92, 143,965.68 and 74,160.44

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Solution

The fourth proportional to 104,362.92, 143,965.68 and 74,160.44 is: 102,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,362.92 : 143,965.68 = 74,160.44 : x
  2. Step 2: Convert to fraction form
    104,362.92/143,965.68 = 74,160.44/x
  3. Step 3: Cross multiply
    104,362.92x = 143,965.68 × 74,160.44
  4. Step 4: Simplify right side
    104,362.92x = 10,676,558,173.70
  5. Step 5: Solve for x
    x = 10,676,558,173.70/104,362.92
  6. Step 6: Final answer
    x = 102,302.22

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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.