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Finding the Fourth Proportional to 93,955.58, 140,785.56 and 72,660.43

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Solution

The fourth proportional to 93,955.58, 140,785.56 and 72,660.43 is: 108,876.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,955.58 : 140,785.56 = 72,660.43 : x
  2. Step 2: Convert to fraction form
    93,955.58/140,785.56 = 72,660.43/x
  3. Step 3: Cross multiply
    93,955.58x = 140,785.56 × 72,660.43
  4. Step 4: Simplify right side
    93,955.58x = 10,229,539,327.39
  5. Step 5: Solve for x
    x = 10,229,539,327.39/93,955.58
  6. Step 6: Final answer
    x = 108,876.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.