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Finding the Fourth Proportional to 93,145.64, 128,540.97 and 50,704.16

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Solution

The fourth proportional to 93,145.64, 128,540.97 and 50,704.16 is: 69,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,145.64 : 128,540.97 = 50,704.16 : x
  2. Step 2: Convert to fraction form
    93,145.64/128,540.97 = 50,704.16/x
  3. Step 3: Cross multiply
    93,145.64x = 128,540.97 × 50,704.16
  4. Step 4: Simplify right side
    93,145.64x = 6,517,561,266.73
  5. Step 5: Solve for x
    x = 6,517,561,266.73/93,145.64
  6. Step 6: Final answer
    x = 69,971.73

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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.