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Finding the Fourth Proportional to 73,412.20, 110,118.30 and 61,892.20

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Solution

The fourth proportional to 73,412.20, 110,118.30 and 61,892.20 is: 92,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,412.20 : 110,118.30 = 61,892.20 : x
  2. Step 2: Convert to fraction form
    73,412.20/110,118.30 = 61,892.20/x
  3. Step 3: Cross multiply
    73,412.20x = 110,118.30 × 61,892.20
  4. Step 4: Simplify right side
    73,412.20x = 6,815,463,847.26
  5. Step 5: Solve for x
    x = 6,815,463,847.26/73,412.20
  6. Step 6: Final answer
    x = 92,838.30

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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.