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Finding the Fourth Proportional to 73,128.03, 109,692.05 and 17,724.03

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Solution

The fourth proportional to 73,128.03, 109,692.05 and 17,724.03 is: 26,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,128.03 : 109,692.05 = 17,724.03 : x
  2. Step 2: Convert to fraction form
    73,128.03/109,692.05 = 17,724.03/x
  3. Step 3: Cross multiply
    73,128.03x = 109,692.05 × 17,724.03
  4. Step 4: Simplify right side
    73,128.03x = 1,944,185,184.96
  5. Step 5: Solve for x
    x = 1,944,185,184.96/73,128.03
  6. Step 6: Final answer
    x = 26,586.05

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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.