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Finding the Fourth Proportional to 53,172.90, 79,733.97 and 30,992.67

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Solution

The fourth proportional to 53,172.90, 79,733.97 and 30,992.67 is: 46,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,172.90 : 79,733.97 = 30,992.67 : x
  2. Step 2: Convert to fraction form
    53,172.90/79,733.97 = 30,992.67/x
  3. Step 3: Cross multiply
    53,172.90x = 79,733.97 × 30,992.67
  4. Step 4: Simplify right side
    53,172.90x = 2,471,168,620.00
  5. Step 5: Solve for x
    x = 2,471,168,620.00/53,172.90
  6. Step 6: Final answer
    x = 46,474.21

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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.