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Finding the Fourth Proportional to 16,791.75, 23,172.75 and 9,339.75

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Solution

The fourth proportional to 16,791.75, 23,172.75 and 9,339.75 is: 12,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,791.75 : 23,172.75 = 9,339.75 : x
  2. Step 2: Convert to fraction form
    16,791.75/23,172.75 = 9,339.75/x
  3. Step 3: Cross multiply
    16,791.75x = 23,172.75 × 9,339.75
  4. Step 4: Simplify right side
    16,791.75x = 216,427,691.81
  5. Step 5: Solve for x
    x = 216,427,691.81/16,791.75
  6. Step 6: Final answer
    x = 12,888.93

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1.5x scale

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.