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Finding the Fourth Proportional to 67,722.80, 101,593.64 and 28,270.88

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Solution

The fourth proportional to 67,722.80, 101,593.64 and 28,270.88 is: 42,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.80 : 101,593.64 = 28,270.88 : x
  2. Step 2: Convert to fraction form
    67,722.80/101,593.64 = 28,270.88/x
  3. Step 3: Cross multiply
    67,722.80x = 101,593.64 × 28,270.88
  4. Step 4: Simplify right side
    67,722.80x = 2,872,141,605.20
  5. Step 5: Solve for x
    x = 2,872,141,605.20/67,722.80
  6. Step 6: Final answer
    x = 42,410.26

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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.