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Finding the Fourth Proportional to 93,940.28, 129,623.50 and 53,645.49

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Solution

The fourth proportional to 93,940.28, 129,623.50 and 53,645.49 is: 74,022.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,940.28 : 129,623.50 = 53,645.49 : x
  2. Step 2: Convert to fraction form
    93,940.28/129,623.50 = 53,645.49/x
  3. Step 3: Cross multiply
    93,940.28x = 129,623.50 × 53,645.49
  4. Step 4: Simplify right side
    93,940.28x = 6,953,716,173.02
  5. Step 5: Solve for x
    x = 6,953,716,173.02/93,940.28
  6. Step 6: Final answer
    x = 74,022.73

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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.