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Finding the Fourth Proportional to 73,712.87, 110,503.84 and 28,723.81

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Solution

The fourth proportional to 73,712.87, 110,503.84 and 28,723.81 is: 43,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,712.87 : 110,503.84 = 28,723.81 : x
  2. Step 2: Convert to fraction form
    73,712.87/110,503.84 = 28,723.81/x
  3. Step 3: Cross multiply
    73,712.87x = 110,503.84 × 28,723.81
  4. Step 4: Simplify right side
    73,712.87x = 3,174,091,304.43
  5. Step 5: Solve for x
    x = 3,174,091,304.43/73,712.87
  6. Step 6: Final answer
    x = 43,060.21

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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.