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Finding the Fourth Proportional to 11,425.90, 17,142.09 and 6,927.97

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Solution

The fourth proportional to 11,425.90, 17,142.09 and 6,927.97 is: 10,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.90 : 17,142.09 = 6,927.97 : x
  2. Step 2: Convert to fraction form
    11,425.90/17,142.09 = 6,927.97/x
  3. Step 3: Cross multiply
    11,425.90x = 17,142.09 × 6,927.97
  4. Step 4: Simplify right side
    11,425.90x = 118,759,885.26
  5. Step 5: Solve for x
    x = 118,759,885.26/11,425.90
  6. Step 6: Final answer
    x = 10,393.92

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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.