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Finding the Fourth Proportional to 206,720.06, 310,081.30 and 73,605.46

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Solution

The fourth proportional to 206,720.06, 310,081.30 and 73,605.46 is: 110,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,720.06 : 310,081.30 = 73,605.46 : x
  2. Step 2: Convert to fraction form
    206,720.06/310,081.30 = 73,605.46/x
  3. Step 3: Cross multiply
    206,720.06x = 310,081.30 × 73,605.46
  4. Step 4: Simplify right side
    206,720.06x = 22,823,676,723.90
  5. Step 5: Solve for x
    x = 22,823,676,723.90/206,720.06
  6. Step 6: Final answer
    x = 110,408.62

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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.