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Finding the Fourth Proportional to 72,172.17, 108,184.44 and 36,567.51

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Solution

The fourth proportional to 72,172.17, 108,184.44 and 36,567.51 is: 54,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,172.17 : 108,184.44 = 36,567.51 : x
  2. Step 2: Convert to fraction form
    72,172.17/108,184.44 = 36,567.51/x
  3. Step 3: Cross multiply
    72,172.17x = 108,184.44 × 36,567.51
  4. Step 4: Simplify right side
    72,172.17x = 3,956,035,591.54
  5. Step 5: Solve for x
    x = 3,956,035,591.54/72,172.17
  6. Step 6: Final answer
    x = 54,813.87

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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.