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Finding the Fourth Proportional to 72,328.92, 108,509.94 and 27,956.04

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Solution

The fourth proportional to 72,328.92, 108,509.94 and 27,956.04 is: 41,940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,328.92 : 108,509.94 = 27,956.04 : x
  2. Step 2: Convert to fraction form
    72,328.92/108,509.94 = 27,956.04/x
  3. Step 3: Cross multiply
    72,328.92x = 108,509.94 × 27,956.04
  4. Step 4: Simplify right side
    72,328.92x = 3,033,508,223.04
  5. Step 5: Solve for x
    x = 3,033,508,223.04/72,328.92
  6. Step 6: Final answer
    x = 41,940.46

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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.