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Finding the Fourth Proportional to 79,920.79, 110,290.47 and 44,110.55

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Solution

The fourth proportional to 79,920.79, 110,290.47 and 44,110.55 is: 60,872.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.79 : 110,290.47 = 44,110.55 : x
  2. Step 2: Convert to fraction form
    79,920.79/110,290.47 = 44,110.55/x
  3. Step 3: Cross multiply
    79,920.79x = 110,290.47 × 44,110.55
  4. Step 4: Simplify right side
    79,920.79x = 4,864,973,401.77
  5. Step 5: Solve for x
    x = 4,864,973,401.77/79,920.79
  6. Step 6: Final answer
    x = 60,872.44

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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.