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Finding the Fourth Proportional to 101,008.80, 151,513.20 and 73,015.20

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Solution

The fourth proportional to 101,008.80, 151,513.20 and 73,015.20 is: 109,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,008.80 : 151,513.20 = 73,015.20 : x
  2. Step 2: Convert to fraction form
    101,008.80/151,513.20 = 73,015.20/x
  3. Step 3: Cross multiply
    101,008.80x = 151,513.20 × 73,015.20
  4. Step 4: Simplify right side
    101,008.80x = 11,062,766,600.64
  5. Step 5: Solve for x
    x = 11,062,766,600.64/101,008.80
  6. Step 6: Final answer
    x = 109,522.80

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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.