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Finding the Fourth Proportional to 73,128.16, 109,692.24 and 17,724.16

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Solution

The fourth proportional to 73,128.16, 109,692.24 and 17,724.16 is: 26,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.16 : 109,692.24 = 17,724.16 : x
  2. Step 2: Convert to fraction form
    73,128.16/109,692.24 = 17,724.16/x
  3. Step 3: Cross multiply
    73,128.16x = 109,692.24 × 17,724.16
  4. Step 4: Simplify right side
    73,128.16x = 1,944,202,493.98
  5. Step 5: Solve for x
    x = 1,944,202,493.98/73,128.16
  6. Step 6: Final answer
    x = 26,586.24

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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.