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Finding the Fourth Proportional to 48,958.80, 73,438.20 and 42,277.20

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Solution

The fourth proportional to 48,958.80, 73,438.20 and 42,277.20 is: 63,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,958.80 : 73,438.20 = 42,277.20 : x
  2. Step 2: Convert to fraction form
    48,958.80/73,438.20 = 42,277.20/x
  3. Step 3: Cross multiply
    48,958.80x = 73,438.20 × 42,277.20
  4. Step 4: Simplify right side
    48,958.80x = 3,104,761,469.04
  5. Step 5: Solve for x
    x = 3,104,761,469.04/48,958.80
  6. Step 6: Final answer
    x = 63,415.80

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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.