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Finding the Fourth Proportional to 72,633.36, 108,947.08 and 20,041.50

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Solution

The fourth proportional to 72,633.36, 108,947.08 and 20,041.50 is: 30,061.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,633.36 : 108,947.08 = 20,041.50 : x
  2. Step 2: Convert to fraction form
    72,633.36/108,947.08 = 20,041.50/x
  3. Step 3: Cross multiply
    72,633.36x = 108,947.08 × 20,041.50
  4. Step 4: Simplify right side
    72,633.36x = 2,183,463,224.69
  5. Step 5: Solve for x
    x = 2,183,463,224.69/72,633.36
  6. Step 6: Final answer
    x = 30,061.44

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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.