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Finding the Fourth Proportional to 93,940.46, 129,651.18 and 58,142

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Solution

The fourth proportional to 93,940.46, 129,651.18 and 58,142 is: 80,244.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,940.46 : 129,651.18 = 58,142 : x
  2. Step 2: Convert to fraction form
    93,940.46/129,651.18 = 58,142/x
  3. Step 3: Cross multiply
    93,940.46x = 129,651.18 × 58,142
  4. Step 4: Simplify right side
    93,940.46x = 7,538,178,907.56
  5. Step 5: Solve for x
    x = 7,538,178,907.56/93,940.46
  6. Step 6: Final answer
    x = 80,244.22

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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.