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Finding the Fourth Proportional to 73,873.90, 110,703.39 and 42,186.16

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Solution

The fourth proportional to 73,873.90, 110,703.39 and 42,186.16 is: 63,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,873.90 : 110,703.39 = 42,186.16 : x
  2. Step 2: Convert to fraction form
    73,873.90/110,703.39 = 42,186.16/x
  3. Step 3: Cross multiply
    73,873.90x = 110,703.39 × 42,186.16
  4. Step 4: Simplify right side
    73,873.90x = 4,670,150,923.08
  5. Step 5: Solve for x
    x = 4,670,150,923.08/73,873.90
  6. Step 6: Final answer
    x = 63,217.87

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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.