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Finding the Fourth Proportional to 20,791.92, 31,192.82 and 6,752.00

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Solution

The fourth proportional to 20,791.92, 31,192.82 and 6,752.00 is: 10,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.92 : 31,192.82 = 6,752.00 : x
  2. Step 2: Convert to fraction form
    20,791.92/31,192.82 = 6,752.00/x
  3. Step 3: Cross multiply
    20,791.92x = 31,192.82 × 6,752.00
  4. Step 4: Simplify right side
    20,791.92x = 210,613,730.92
  5. Step 5: Solve for x
    x = 210,613,730.92/20,791.92
  6. Step 6: Final answer
    x = 10,129.60

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1.5x scale

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.