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Finding the Fourth Proportional to 10,791.42, 14,885.22 and 6,961.38

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Solution

The fourth proportional to 10,791.42, 14,885.22 and 6,961.38 is: 9,602.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.42 : 14,885.22 = 6,961.38 : x
  2. Step 2: Convert to fraction form
    10,791.42/14,885.22 = 6,961.38/x
  3. Step 3: Cross multiply
    10,791.42x = 14,885.22 × 6,961.38
  4. Step 4: Simplify right side
    10,791.42x = 103,621,672.80
  5. Step 5: Solve for x
    x = 103,621,672.80/10,791.42
  6. Step 6: Final answer
    x = 9,602.23

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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.