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Finding the Fourth Proportional to 34,920.74, 52,388.91 and 12,734.11

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Solution

The fourth proportional to 34,920.74, 52,388.91 and 12,734.11 is: 19,104.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,920.74 : 52,388.91 = 12,734.11 : x
  2. Step 2: Convert to fraction form
    34,920.74/52,388.91 = 12,734.11/x
  3. Step 3: Cross multiply
    34,920.74x = 52,388.91 × 12,734.11
  4. Step 4: Simplify right side
    34,920.74x = 667,126,221.64
  5. Step 5: Solve for x
    x = 667,126,221.64/34,920.74
  6. Step 6: Final answer
    x = 19,104.01

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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.