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Finding the Fourth Proportional to 101,216.75, 151,721.44 and 42,086.75

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Solution

The fourth proportional to 101,216.75, 151,721.44 and 42,086.75 is: 63,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,216.75 : 151,721.44 = 42,086.75 : x
  2. Step 2: Convert to fraction form
    101,216.75/151,721.44 = 42,086.75/x
  3. Step 3: Cross multiply
    101,216.75x = 151,721.44 × 42,086.75
  4. Step 4: Simplify right side
    101,216.75x = 6,385,462,314.92
  5. Step 5: Solve for x
    x = 6,385,462,314.92/101,216.75
  6. Step 6: Final answer
    x = 63,087.01

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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.