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Finding the Fourth Proportional to 93,609, 129,180.96 and 60,075

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Solution

The fourth proportional to 93,609, 129,180.96 and 60,075 is: 82,903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,609 : 129,180.96 = 60,075 : x
  2. Step 2: Convert to fraction form
    93,609/129,180.96 = 60,075/x
  3. Step 3: Cross multiply
    93,609x = 129,180.96 × 60,075
  4. Step 4: Simplify right side
    93,609x = 7,760,546,172
  5. Step 5: Solve for x
    x = 7,760,546,172/93,609
  6. Step 6: Final answer
    x = 82,903.85

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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.