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Finding the Fourth Proportional to 75,446.72, 104,118.72 and 43,612.80

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Solution

The fourth proportional to 75,446.72, 104,118.72 and 43,612.80 is: 60,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,446.72 : 104,118.72 = 43,612.80 : x
  2. Step 2: Convert to fraction form
    75,446.72/104,118.72 = 43,612.80/x
  3. Step 3: Cross multiply
    75,446.72x = 104,118.72 × 43,612.80
  4. Step 4: Simplify right side
    75,446.72x = 4,540,908,911.62
  5. Step 5: Solve for x
    x = 4,540,908,911.62/75,446.72
  6. Step 6: Final answer
    x = 60,186.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.