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Finding the Fourth Proportional to 115,154.16, 172,737.42 and 36,274.56

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Solution

The fourth proportional to 115,154.16, 172,737.42 and 36,274.56 is: 54,413.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,154.16 : 172,737.42 = 36,274.56 : x
  2. Step 2: Convert to fraction form
    115,154.16/172,737.42 = 36,274.56/x
  3. Step 3: Cross multiply
    115,154.16x = 172,737.42 × 36,274.56
  4. Step 4: Simplify right side
    115,154.16x = 6,265,973,906.04
  5. Step 5: Solve for x
    x = 6,265,973,906.04/115,154.16
  6. Step 6: Final answer
    x = 54,413.79

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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.