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Finding the Fourth Proportional to 72,625.44, 108,784.96 and 33,215.68

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Solution

The fourth proportional to 72,625.44, 108,784.96 and 33,215.68 is: 49,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,625.44 : 108,784.96 = 33,215.68 : x
  2. Step 2: Convert to fraction form
    72,625.44/108,784.96 = 33,215.68/x
  3. Step 3: Cross multiply
    72,625.44x = 108,784.96 × 33,215.68
  4. Step 4: Simplify right side
    72,625.44x = 3,613,366,420.17
  5. Step 5: Solve for x
    x = 3,613,366,420.17/72,625.44
  6. Step 6: Final answer
    x = 49,753.45

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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.