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Finding the Fourth Proportional to 72,588.81, 108,896.04 and 33,149.91

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Solution

The fourth proportional to 72,588.81, 108,896.04 and 33,149.91 is: 49,730.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,588.81 : 108,896.04 = 33,149.91 : x
  2. Step 2: Convert to fraction form
    72,588.81/108,896.04 = 33,149.91/x
  3. Step 3: Cross multiply
    72,588.81x = 108,896.04 × 33,149.91
  4. Step 4: Simplify right side
    72,588.81x = 3,609,893,925.36
  5. Step 5: Solve for x
    x = 3,609,893,925.36/72,588.81
  6. Step 6: Final answer
    x = 49,730.72

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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.