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Finding the Fourth Proportional to 73,100.48, 100,872.60 and 42,882.64

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Solution

The fourth proportional to 73,100.48, 100,872.60 and 42,882.64 is: 59,174.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,100.48 : 100,872.60 = 42,882.64 : x
  2. Step 2: Convert to fraction form
    73,100.48/100,872.60 = 42,882.64/x
  3. Step 3: Cross multiply
    73,100.48x = 100,872.60 × 42,882.64
  4. Step 4: Simplify right side
    73,100.48x = 4,325,683,391.66
  5. Step 5: Solve for x
    x = 4,325,683,391.66/73,100.48
  6. Step 6: Final answer
    x = 59,174.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.