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Finding the Fourth Proportional to 73,385.28, 109,985.28 and 40,035.84

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Solution

The fourth proportional to 73,385.28, 109,985.28 and 40,035.84 is: 60,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,385.28 : 109,985.28 = 40,035.84 : x
  2. Step 2: Convert to fraction form
    73,385.28/109,985.28 = 40,035.84/x
  3. Step 3: Cross multiply
    73,385.28x = 109,985.28 × 40,035.84
  4. Step 4: Simplify right side
    73,385.28x = 4,403,353,072.44
  5. Step 5: Solve for x
    x = 4,403,353,072.44/73,385.28
  6. Step 6: Final answer
    x = 60,003.22

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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.