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Finding the Fourth Proportional to 72,517.68, 108,786.90 and 32,036.28

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Solution

The fourth proportional to 72,517.68, 108,786.90 and 32,036.28 is: 48,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,517.68 : 108,786.90 = 32,036.28 : x
  2. Step 2: Convert to fraction form
    72,517.68/108,786.90 = 32,036.28/x
  3. Step 3: Cross multiply
    72,517.68x = 108,786.90 × 32,036.28
  4. Step 4: Simplify right side
    72,517.68x = 3,485,127,588.73
  5. Step 5: Solve for x
    x = 3,485,127,588.73/72,517.68
  6. Step 6: Final answer
    x = 48,059.01

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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.